From d5b3d7c5973798ece1b8ead2f10b09778ce93d1a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=84min=20Baumeler?= <amin@indyfac.ch>
Date: Mon, 8 Sep 2025 12:10:10 +0200
Subject: [PATCH] cleaned up

---
 src/main.sh        | 167 +++++++++++++++++--------------------------
 src/sh/api.sh      |   1 -
 src/sh/awk.sh      |  36 +++++-----
 src/sh/cache.sh    |   4 +-
 src/sh/config.sh   |   1 +
 src/sh/filter.sh   | 173 +++++----------------------------------------
 src/sh/fzf.sh      |  62 ++--------------
 src/sh/helper.sh   |  19 -----
 src/sh/info.sh     |   2 +-
 src/sh/keys.sh     |  57 ++++++---------
 src/sh/lists.sh    |  57 +++------------
 src/sh/local.sh    |  26 +++----
 src/sh/log.sh      |  15 ++++
 src/sh/mb.sh       |  10 +--
 src/sh/mpv.sh      |   2 +-
 src/sh/playback.sh | 101 +++++++++++++++++++++++++-
 src/sh/playlist.sh |  26 +++++++
 src/sh/preview.sh  |  14 ++--
 src/sh/query.sh    | 155 ++++++++++++++++++++++++++++++++++++++++
 src/sh/theme.sh    |  20 ++++++
 src/sh/tools.sh    |  72 ++++++++++---------
 21 files changed, 522 insertions(+), 498 deletions(-)
 delete mode 100644 src/sh/helper.sh
 create mode 100644 src/sh/log.sh
 create mode 100644 src/sh/query.sh

diff --git a/src/main.sh b/src/main.sh
index c48dd44..f16d52a 100755
--- a/src/main.sh
+++ b/src/main.sh
@@ -40,23 +40,15 @@ VIEW_QUIT="quit"
 MODE_NORMAL="hidden"
 MODE_INSERT="show"
 
-# Load helper methods
+# Methods and variables used in main instance and subprocesses
+# Load application information
 . "sh/info.sh"
 
-# Load helper methods
-. "sh/helper.sh"
+# Load logging methods
+. "sh/log.sh"
 
-# Load configuration
-. "sh/config.sh"
-
-# Load theme
-. "sh/theme.sh"
-
-# Load keys
-. "sh/keys.sh"
-
-# Load filters
-. "sh/filter.sh"
+# Load query methods
+. "sh/query.sh"
 
 # Load playback helper
 . "sh/playback.sh"
@@ -64,12 +56,6 @@ MODE_INSERT="show"
 # Load playlist tools
 . "sh/playlist.sh"
 
-# Load AWK scripts
-. "sh/awk.sh"
-
-# Load tools
-. "sh/tools.sh"
-
 # Load MusicBrainz and Discogs methods
 . "sh/api.sh"
 
@@ -129,82 +115,22 @@ case "${1:-}" in
   exit 0
   ;;
 "--playback")
-  # Control mpv instance
+  # Control mpv instance (see `src/sh/playback.sh`)
   #
   # @argument $2: view
   # @argument $3: MusicBrainz ID of current object
   # @argument $4: MusicBrainz ID of selected object
   # @argument $5: Path to decoration file
-  #
-  # This option controls the mpv instance via a key pressed in fzf. The key
-  # pressed is stored in the environment variable FZF_KEY and is resolved to
-  # the playback command through the method `playback_cmd_from_key` (see
-  # `src/sh/playback.sh` for a description of all playback commands).
-  view=${2:-}
-  mbid_current="${3:-}"
-  mbid="${4:-}"
-  path="${5:-}"
-  pbcmd=$(playback_cmd_from_key "$FZF_KEY")
-  case "$pbcmd" in
-  "$PLAYBACK_CMD_PLAY")
-    [ "$path" ] || exit 0
-    case "$view" in
-    "$VIEW_ARTIST" | "$VIEW_SEARCH_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") debug "not implemented" ;;
-    "$VIEW_RELEASEGROUP") generate_playlist "$mbid" "$path" | mpv_play_list >/dev/null ;;
-    "$VIEW_RELEASE") generate_playlist "$mbid_current" "$path" "$mbid" | mpv_play_list >/dev/null ;;
-    "$VIEW_PLAYLIST") mpv_play_index $((FZF_POS - 1)) >/dev/null ;;
-    esac
-    ;;
-  "$PLAYBACK_CMD_QUEUE")
-    [ "$path" ] || exit 0
-    case "$view" in
-    "$VIEW_ARTIST" | "$VIEW_SEARCH_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") debug "not implemented" ;;
-    "$VIEW_RELEASEGROUP") generate_playlist "$mbid" "$path" | mpv_queue_list >/dev/null ;;
-    "$VIEW_RELEASE") generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_list >/dev/null ;;
-    "$VIEW_PLAYLIST") generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_list >/dev/null ;;
-    esac
-    ;;
-  "$PLAYBACK_CMD_QUEUE_NEXT")
-    [ "$path" ] || exit 0
-    case "$view" in
-    "$VIEW_ARTIST" | "$VIEW_SEARCH_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") debug "not implemented" ;;
-    "$VIEW_RELEASEGROUP") generate_playlist "$mbid" "$path" | mpv_queue_next_list >/dev/null ;;
-    "$VIEW_RELEASE") generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_next_list >/dev/null ;;
-    "$VIEW_PLAYLIST") generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_next_list >/dev/null ;;
-    esac
-    ;;
-  "$PLAYBACK_CMD_TOGGLE_PLAYBACK") mpv_toggle_pause ;;
-  "$PLAYBACK_CMD_PLAY_NEXT") mpv_next ;;
-  "$PLAYBACK_CMD_PLAY_PREV") mpv_prev ;;
-  "$PLAYBACK_CMD_SEEK_FORWARD") mpv_seek_forward ;;
-  "$PLAYBACK_CMD_SEEK_BACKWARD") mpv_seek_backward ;;
-  esac
+  shift
+  playback "$@"
   exit 0
   ;;
 "--playlist")
-  # Run playback commands
+  # Run playback commands (see `src/sh/playlits.sh`)
   #
-  # @argument $2: playback command (see `src/sh/playback.sh`)
-  #
-  # This is a wrapper to execute mpv commands.
-  case "$2" in
-  "$PLAYLIST_CMD_REMOVE") mpv_rm_index $((FZF_POS - 1)) ;;
-  "$PLAYLIST_CMD_UP") mpv_playlist_move $((FZF_POS - 1)) $((FZF_POS - 2)) ;;
-  "$PLAYLIST_CMD_DOWN") mpv_playlist_move $((FZF_POS - 0)) $((FZF_POS - 1)) ;;
-  "$PLAYLIST_CMD_CLEAR") mpv_playlist_clear ;;
-  "$PLAYLIST_CMD_CLEAR_ABOVE")
-    for i in $(seq "$FZF_POS"); do
-      mpv_rm_index 0
-    done
-    ;;
-  "$PLAYLIST_CMD_CLEAR_BELOW")
-    cnt=$(mpv_playlist_count)
-    rem=$((cnt - FZF_POS + 1))
-    for i in $(seq "$rem"); do
-      mpv_rm_index $((FZF_POS - 1))
-    done
-    ;;
-  esac
+  # @argument $2: playlist command
+  shift
+  playlist "$@"
   exit 0
   ;;
 "--action-playlistcursor")
@@ -254,9 +180,9 @@ case "${1:-}" in
   mbid_cur="${4:-}"
   mbid="${5:-}"
   case "$view" in
-  "$VIEW_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ALBUMS") j="$(mb_releasegroup "$mbid" | $JQ -r --compact-output '."artist-credit"')" ;;
-  "$VIEW_RELEASEGROUP") j="$(mb_release "$mbid" | $JQ -r --compact-output '."artist-credit"')" ;;
-  "$VIEW_RELEASE" | "$VIEW_PLAYLIST") j="$(mb_release "$mbid_cur" | $JQ -r --compact-output ".media | map(.tracks) | flatten[] | select(.id == \"$mbid\") | .\"artist-credit\"")" ;;
+  "$VIEW_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ALBUMS") j="$(mb_releasegroup "$mbid" | $JQ '."artist-credit"')" ;;
+  "$VIEW_RELEASEGROUP") j="$(mb_release "$mbid" | $JQ '."artist-credit"')" ;;
+  "$VIEW_RELEASE" | "$VIEW_PLAYLIST") j="$(mb_release "$mbid_cur" | $JQ ".media | map(.tracks) | flatten[] | select(.id == \"$mbid\") | .\"artist-credit\"")" ;;
   "$VIEW_SEARCH_ARTIST" | "$VIEW_LIST_ARTISTS") aid="$mbid" ;;
   esac
   if [ "$view" = "$VIEW_PLAYLIST" ]; then
@@ -265,7 +191,7 @@ case "${1:-}" in
   fi
   if [ "${j:-}" ]; then
     cnt=$(echo "$j" | $JQ 'length')
-    [ "$cnt" -eq 1 ] && aid="$(echo "$j" | $JQ -r '.[0].artist.id')"
+    [ "$cnt" -eq 1 ] && aid="$(echo "$j" | $JQ '.[0].artist.id')"
   fi
   [ "${aid:-}" ] && $0 --action-draw "$mode" "$VIEW_ARTIST" "$aid" || printf "print(%s)+print(%s)+print(%s)+print(%s)+accept" "$VIEW_SELECT_ARTIST" "$j" "$view" "$mbid_cur"
   exit 0
@@ -322,11 +248,11 @@ case "${1:-}" in
       ;;
     "$VIEW_RELEASEGROUP")
       view="$VIEW_ARTIST"
-      mbid="$(mb_releasegroup "$mbid" | $JQ -r --compact-output '."artist-credit"[0].artist.id')"
+      mbid="$(mb_releasegroup "$mbid" | $JQ '."artist-credit"[0].artist.id')"
       ;;
     "$VIEW_RELEASE")
       view="$VIEW_RELEASEGROUP"
-      mbid="$(mb_release "$mbid" | $JQ -r --compact-output '."release-group".id')"
+      mbid="$(mb_release "$mbid" | $JQ '."release-group".id')"
       ;;
     esac
     ;;
@@ -501,10 +427,39 @@ case "${1:-}" in
   ;;
 esac
 
-# Start application: Set title, get temporary directory, start mpv daemon, and
-# enter main fzf loop.
+# Start application:
+# - load configuration
+# - load and export theme
+# - load and export preset filters
+# - load and export keys
+# - load and export tools
+# - load and export awk scripts
+# - set title
+# - get temporary directory for temporary files
+# - start mpv daemon
+# - enter main loop and start fzf
+
+# Load configuration
+. "sh/config.sh"
+
+# Load theme
+. "sh/theme.sh"
+
+# Load filters
+. "sh/filter.sh"
+
+# Load keys
+. "sh/keys.sh"
+
+# Load tools
+. "sh/tools.sh"
+
+# Load AWK scripts
+. "sh/awk.sh"
+
 # Set window title
 printf '\033]0;%s\007' "$WINDOW_TITLE"
+
 # Generate filenames for temporary files
 tmpdir=$(mktemp -d)
 LOCKFILE="$tmpdir/lock"
@@ -512,6 +467,7 @@ RESULTS="$tmpdir/results"
 PIDFILE="$tmpdir/pid"
 trap 'rm -rf "$tmpdir"' EXIT INT
 export LOCKFILE RESULTS PIDFILE
+
 # Start mpv
 mpv_start
 
@@ -541,6 +497,8 @@ PUT_FZF_KEY_LOGIC="case \$FZF_KEY in space) echo \"put( )\";; left) echo backwar
 while true; do
   case "$VIEW" in
   "$VIEW_SELECT_ARTIST")
+    info "SELECT ARTIST VIEW with ARGS=$ARGS"
+    info "$(echo "$ARGS" | list_artists_from_json)"
     sel=$(
       echo "$ARGS" | list_artists_from_json | $FZF \
         --bind="$KEYS_DOWN:down" \
@@ -548,13 +506,13 @@ while true; do
         --bind="$KEYS_HALFPAGE_DOWN:half-page-down" \
         --bind="$KEYS_HALFPAGE_UP:half-page-up" \
         --bind="enter,$KEYS_IN:print($VIEW_ARTIST)+accept" \
-        --bind="$KEYS_OUT,$KEYS_QUIT:print($LASTVIEW)+print($LASTARG)+print($VIEW_SELECT_ARTIST)+print($ARGS)+accept" \
+        --bind="$KEYS_OUT,$KEYS_QUIT:print($LASTVIEW)+print($LASTARG)+accept" \
         --bind="$KEYS_LIST_ARTISTS:print($VIEW_LIST_ARTISTS)+accept" \
         --bind="$KEYS_LIST_ALBUMS:print($VIEW_LIST_ALBUMS)+accept" \
         --bind="$KEYS_SEARCH_ARTIST:print($VIEW_SEARCH_ARTIST)+accept" \
         --bind="$KEYS_SEARCH_ALBUM:print($VIEW_SEARCH_ALBUM)+accept" \
         --bind="$KEYS_BROWSE:execute-silent:open \"https://musicbrainz.org/artist/{r3}\"" \
-        --bind="$KEYS_SHOW_PLAYLIST:print($VIEW_PLAYLIST)+print()+print($VIEW_SELECT_ARTIST)+print($ARGS)+accept" \
+        --bind="$KEYS_SHOW_PLAYLIST:print($VIEW_PLAYLIST)+print()+accept" \
         -0 -1 \
         --border="bold" \
         --border-label="Select artist" \
@@ -565,11 +523,16 @@ while true; do
         --accept-nth="{3}" \
         --with-nth="{1}" || true
     )
-    debug "$sel"
-    VIEW="$(echo "$sel" | head -1)"
-    MBID="$(echo "$sel" | head -2 | tail -1)"
-    LASTVIEW="$(echo "$sel" | head -3 | tail -1)"
-    LASTARG="$(echo "$sel" | head -4 | tail -1)"
+    lines=$(echo "$sel" | wc -l)
+    if [ "$lines" -eq 1 ]; then
+      VIEW="$VIEW_ARTIST"
+      MBID="$sel"
+    else
+      VIEW="$(echo "$sel" | head -1)"
+      MBID="$(echo "$sel" | head -2 | tail -1)"
+    fi
+    LASTVIEW="$VIEW_SELECT_ARTIST"
+    LASTARG="$ARGS"
     ;;
   "$VIEW_PLAYLIST")
     sel=$(
diff --git a/src/sh/api.sh b/src/sh/api.sh
index 33ba37d..fb00114 100644
--- a/src/sh/api.sh
+++ b/src/sh/api.sh
@@ -2,7 +2,6 @@ MB_MAX_RETRIES=10
 MB_BROWSE_STEPS=100
 USER_AGENT="$APP_NAME/$APP_VERSION ($APP_WEBSITE)"
 SLEEP_ON_ERROR=1
-export MB_BROWSE_STEPS
 
 __api_mb() {
   tmpout=$(mktemp)
diff --git a/src/sh/awk.sh b/src/sh/awk.sh
index 400cbac..d356136 100644
--- a/src/sh/awk.sh
+++ b/src/sh/awk.sh
@@ -1,27 +1,31 @@
-AWK_ARTISTS=$(
-  cat <<'EOF'
+if [ ! "${AWK_LOADED:-}" ]; then
+  AWK_ARTISTS=$(
+    cat <<'EOF'
 @@include awk/artists.awk
 EOF
-)
-export AWK_ARTISTS
+  )
+  export AWK_ARTISTS
 
-AWK_RELEASES=$(
-  cat <<'EOF'
+  AWK_RELEASES=$(
+    cat <<'EOF'
 @@include awk/releases.awk
 EOF
-)
-export AWK_RELEASES
+  )
+  export AWK_RELEASES
 
-AWK_RELEASEGROUPS=$(
-  cat <<'EOF'
+  AWK_RELEASEGROUPS=$(
+    cat <<'EOF'
 @@include awk/releasegroups.awk
 EOF
-)
-export AWK_RELEASEGROUPS
+  )
+  export AWK_RELEASEGROUPS
 
-AWK_RECORDINGS=$(
-  cat <<'EOF'
+  AWK_RECORDINGS=$(
+    cat <<'EOF'
 @@include awk/recordings.awk
 EOF
-)
-export AWK_RECORDINGS
+  )
+  export AWK_RECORDINGS
+
+  export AWK_LOADED=1
+fi
diff --git a/src/sh/cache.sh b/src/sh/cache.sh
index f54f26b..ba5b4ee 100644
--- a/src/sh/cache.sh
+++ b/src/sh/cache.sh
@@ -82,7 +82,7 @@ cache_append_artist_releasegroups() {
   cat >"$tmpf"
   updated=$(mktemp)
   f="$CACHEDIR/$TYPE_ARTIST/$(__radix "$1")/$artist_releasegroups_filename"
-  $JQ -r --slurpfile n "$tmpf" '."release-groups" += ($n[0]|."release-groups")' "$f" >"$updated" && mv "$updated" "$f"
+  $JQ --slurpfile n "$tmpf" '."release-groups" += ($n[0]|."release-groups")' "$f" >"$updated" && mv "$updated" "$f"
   rm -f "$tmpf"
 }
 
@@ -120,7 +120,7 @@ cache_append_releasegroup_releases() {
   cat >"$tmpf"
   updated=$(mktemp)
   f="$CACHEDIR/$TYPE_RELEASEGROUP/$(__radix "$1")/$releasegroup_releases_filename"
-  $JQ -r --slurpfile n "$tmpf" '."releases" += ($n[0]|."releases")' "$f" >"$updated" && mv "$updated" "$f"
+  $JQ --slurpfile n "$tmpf" '."releases" += ($n[0]|."releases")' "$f" >"$updated" && mv "$updated" "$f"
   rm -f "$tmpf"
 }
 
diff --git a/src/sh/config.sh b/src/sh/config.sh
index 16ae10c..ce387c6 100644
--- a/src/sh/config.sh
+++ b/src/sh/config.sh
@@ -1,3 +1,4 @@
+# Configuration capabilities
 CONFIGFILE_DEFAULT="$HOME/.config/$APP_NAME/config"
 CONFIGFILE="${CONFIGFILE:-"$CONFIGFILE_DEFAULT"}"
 [ "$CONFIGFILE" != "$CONFIGFILE_DEFAULT" ] && [ ! -f "$CONFIGFILE" ] && err "The configuration file manually specified with the environment variable CONFIGFILE=($CONFIGFILE) does not exist." && exit 1
diff --git a/src/sh/filter.sh b/src/sh/filter.sh
index 5e2f8a9..0db8e40 100644
--- a/src/sh/filter.sh
+++ b/src/sh/filter.sh
@@ -1,34 +1,6 @@
-# The default queries depend on the current view, and are usually derived from
-# the theme. Nevertheless, they may be overwritten with the configuration file.
-# Note that filters are not used in the views VIEW_SEARCH_ARTIST and
-# VIEW_SEARCH_ALBUM. The reason for this is that in those modes, changing the
-# query string triggers a search on the MusicBrainz website (the input is not a
-# filter, but a query).
+# Preset filters
 #
-# The keybinding KEYS_FILTER_LOCAL triggers a filter of QUERY_LOCAL in the
-# views VIEW_ARTIST, VIEW_RELEASEGROUP, and VIEW_RELEASE only. Here, it is only
-# possible to adjust QUERY_LOCAL via the configuration. The keybinding KEYS_FILTER_0
-# resets the query. F_1_.. filters are the default filters when the respective
-# view is entered. For all other keys, the filters are individually
-# configurable, by specifying e.g., F_3_VIEW_LIST_ALBUMS.
-#
-# Derived queries
-# To derive the queries from the theme, we must perform some steps: 1) remove
-# colors, and 2) escape white spaces. This is implemented in the method
-# `__clean_filter`.
-#
-# List of derived queries:
-# - QUERY_LOCAL: Hide items that are not locally available
-# - q_has_secondary: Release groups with secondary types
-# - q_album: Release group is of type Album
-# - q_ep: Release group is of type EP
-# - q_single: Release group is of type single
-# - q_official: Release is official
-
-__clean_filter() {
-  cat | sed "s/${ESC}\[[0-9;]*[mK]//g" | sed "s/ /\\\ /g"
-}
-
+# See `src/sh/query.sh` for details and the associated methods.
 QUERY_LOCAL="${QUERY_LOCAL:-"$(printf "'%s'" "$FORMAT_LOCAL" | __clean_filter)"}"
 q_has_seconary="$(printf "$FORMAT_TYPE_HAS_SECONDARY" "" | __clean_filter)"
 q_album="$(printf "%s" "$FORMAT_TYPE_ALBUM" | __clean_filter)"
@@ -37,6 +9,7 @@ q_single=$(printf "%s" "$FORMAT_TYPE_SINGLE" | sed "s/${ESC}\[[0-9;]*[mK]//g" |
 if printf "$RV_FORMAT" | grep -q "<<status>>"; then
   q_official=$(printf "'%s'" "$FORMAT_STATUS_OFFICIAL" | sed "s/${ESC}\[[0-9;]*[mK]//g" | sed "s/ /\\\ /g")
 fi
+export QUERY_LOCAL
 
 F_1_VIEW_ARTIST="${F_1_VIEW_ARTIST:-"!'$q_has_seconary'"}"
 F_2_VIEW_ARTIST="${F_2_VIEW_ARTIST:-"'$q_album'"}"
@@ -47,6 +20,9 @@ F_6_VIEW_ARTIST="${F_6_VIEW_ARTIST:-}"
 F_7_VIEW_ARTIST="${F_7_VIEW_ARTIST:-}"
 F_8_VIEW_ARTIST="${F_8_VIEW_ARTIST:-}"
 F_9_VIEW_ARTIST="${F_9_VIEW_ARTIST:-}"
+export F_1_VIEW_ARTIST F_2_VIEW_ARTIST F_3_VIEW_ARTIST F_4_VIEW_ARTIST \
+  F_5_VIEW_ARTIST F_6_VIEW_ARTIST F_7_VIEW_ARTIST F_8_VIEW_ARTIST \
+  F_9_VIEW_ARTIST
 
 F_1_VIEW_RELEASEGROUP="${F_1_VIEW_RELEASEGROUP:-"${q_official:-}"}"
 F_2_VIEW_RELEASEGROUP="${F_2_VIEW_RELEASEGROUP:-}"
@@ -57,6 +33,9 @@ F_6_VIEW_RELEASEGROUP="${F_6_VIEW_RELEASEGROUP:-}"
 F_7_VIEW_RELEASEGROUP="${F_7_VIEW_RELEASEGROUP:-}"
 F_8_VIEW_RELEASEGROUP="${F_8_VIEW_RELEASEGROUP:-}"
 F_9_VIEW_RELEASEGROUP="${F_9_VIEW_RELEASEGROUP:-}"
+export F_1_VIEW_RELEASEGROUP F_2_VIEW_RELEASEGROUP F_3_VIEW_RELEASEGROUP \
+  F_4_VIEW_RELEASEGROUP F_5_VIEW_RELEASEGROUP F_6_VIEW_RELEASEGROUP \
+  F_7_VIEW_RELEASEGROUP F_8_VIEW_RELEASEGROUP F_9_VIEW_RELEASEGROUP
 
 F_1_VIEW_RELEASE="${F_1_VIEW_RELEASE:-}"
 F_2_VIEW_RELEASE="${F_2_VIEW_RELEASE:-}"
@@ -67,6 +46,9 @@ F_6_VIEW_RELEASE="${F_6_VIEW_RELEASE:-}"
 F_7_VIEW_RELEASE="${F_7_VIEW_RELEASE:-}"
 F_8_VIEW_RELEASE="${F_8_VIEW_RELEASE:-}"
 F_9_VIEW_RELEASE="${F_9_VIEW_RELEASE:-}"
+export F_1_VIEW_RELEASE F_2_VIEW_RELEASE F_3_VIEW_RELEASE F_4_VIEW_RELEASE \
+  F_5_VIEW_RELEASE F_6_VIEW_RELEASE F_7_VIEW_RELEASE F_8_VIEW_RELEASE \
+  F_9_VIEW_RELEASE
 
 F_1_LIST_ARTISTS="${F_1_LIST_ARTISTS:-}"
 F_2_LIST_ARTISTS="${F_2_LIST_ARTISTS:-}"
@@ -77,6 +59,9 @@ F_6_LIST_ARTISTS="${F_6_LIST_ARTISTS:-}"
 F_7_LIST_ARTISTS="${F_7_LIST_ARTISTS:-}"
 F_8_LIST_ARTISTS="${F_8_LIST_ARTISTS:-}"
 F_9_LIST_ARTISTS="${F_9_LIST_ARTISTS:-}"
+export F_1_LIST_ARTISTS F_2_LIST_ARTISTS F_3_LIST_ARTISTS F_4_LIST_ARTISTS \
+  F_5_LIST_ARTISTS F_6_LIST_ARTISTS F_7_LIST_ARTISTS F_8_LIST_ARTISTS \
+  F_9_LIST_ARTISTS
 
 F_1_LIST_ALBUMS="${F_1_LIST_ALBUMS:-}"
 F_2_LIST_ALBUMS="${F_2_LIST_ALBUMS:-}"
@@ -87,128 +72,6 @@ F_6_LIST_ALBUMS="${F_6_LIST_ALBUMS:-}"
 F_7_LIST_ALBUMS="${F_7_LIST_ALBUMS:-}"
 F_8_LIST_ALBUMS="${F_8_LIST_ALBUMS:-}"
 F_9_LIST_ALBUMS="${F_9_LIST_ALBUMS:-}"
-
-# Determine preset query
-# @argument $1: Current view
-# @argument $2: Key pressed (optional)
-#
-# If the key is not given, then the F_1_.. query is used for the respective
-# view, i.e, its as if a key from KEYS_FILTER_1 has been pressed.
-default_query() {
-  view=$1
-  key="${2:-"$(echo "$KEYS_FILTER_1" | cut -d ',' -f 1)"}"
-  case ",$KEYS_FILTER_LOCAL," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST" | "$VIEW_RELEASEGROUP" | "$VIEW_RELEASE") echo "$QUERY_LOCAL" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_1," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_1_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_1_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_1_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_1_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_1_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_2," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_2_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_2_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_2_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_2_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_2_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_3," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_3_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_3_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_3_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_3_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_3_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_4," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_4_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_4_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_4_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_4_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_4_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_5," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_5_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_5_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_5_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_5_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_5_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_6," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_6_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_6_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_6_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_6_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_6_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_7," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_7_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_7_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_7_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_7_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_7_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_8," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_8_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_8_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_8_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_8_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_8_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  case ",$KEYS_FILTER_9," in
-  *",$key,"*)
-    case "$view" in
-    "$VIEW_ARTIST") echo "$F_9_VIEW_ARTIST" ;;
-    "$VIEW_RELEASEGROUP") echo "$F_9_VIEW_RELEASEGROUP" ;;
-    "$VIEW_RELEASE") echo "$F_9_VIEW_RELEASE" ;;
-    "$VIEW_LIST_ARTISTS") echo "$F_9_LIST_ARTISTS" ;;
-    "$VIEW_LIST_ALBUMS") echo "$F_9_LIST_ALBUMS" ;;
-    esac
-    ;;
-  esac
-  # Doing nothing is the same as this last block:
-  # case ",$KEYS_FILTER_0," in
-  # *",$key,"*)
-  #   case "$view" in
-  #   "$VIEW_ARTIST" | "$VIEW_RELEASEGROUP" | "$VIEW_RELEASE" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") echo "" ;;
-  #   esac
-  #   ;;
-  # esac
-}
+export F_1_LIST_ALBUMS F_2_LIST_ALBUMS F_3_LIST_ALBUMS F_4_LIST_ALBUMS \
+  F_5_LIST_ALBUMS F_6_LIST_ALBUMS F_7_LIST_ALBUMS F_8_LIST_ALBUMS \
+  F_9_LIST_ALBUMS
diff --git a/src/sh/fzf.sh b/src/sh/fzf.sh
index 78446b0..32525fc 100644
--- a/src/sh/fzf.sh
+++ b/src/sh/fzf.sh
@@ -10,75 +10,27 @@ fzf_command_set_header() {
   "$VIEW_LIST_ARTISTS") header="Search locally available artist" ;;
   "$VIEW_LIST_ALBUMS") header="Search locally available album" ;;
   "$VIEW_ARTIST")
-    name="$(mb_artist "$mbid" | $JQ -r '.name')"
+    name="$(mb_artist "$mbid" | $JQ '.name')"
     header=$(printf "$ARTIST_PROMPT" "$name")
     ;;
   "$VIEW_RELEASEGROUP")
     title="$(mb_releasegroup "$mbid" |
-      $JQ -r '.title')"
+      $JQ '.title')"
     artist="$(mb_releasegroup "$mbid" |
-      $JQ -r '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
+      $JQ '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
     header=$(printf "$FULL_PROMPT" "$artist" "$title")
     ;;
   "$VIEW_RELEASE")
     title="$(mb_release "$mbid" |
-      $JQ -r '.title')"
+      $JQ '.title')"
     artist="$(mb_release "$mbid" |
-      $JQ -r '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
+      $JQ '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
     header=$(printf "$FULL_PROMPT" "$artist" "$title")
     ;;
   esac
   printf "+change-header(%s)" "${header:-"???"}"
 }
 
-# Print the command that tells fzf to load the data
-# @argument $1: view
-# @argument $2: mbid
-fzf_command_load_data() {
-  view=$1
-  mbid=${2:-}
-  case "$view" in
-  "$VIEW_SEARCH_ARTIST") ;;
-  "$VIEW_SEARCH_ALBUM") ;;
-  "$VIEW_LIST_ARTISTS") ;;
-  "$VIEW_LIST_ALBUMS") ;;
-  "$VIEW_ARTIST") ;;
-  "$VIEW_RELEASEGROUP") ;;
-  "$VIEW_RELEASE") ;;
-  esac
-  printf "+reload($0 --lines %s %s)" "$VIEW_LIST_ARTISTS" ""
-}
-
-# Set prompt of input field
-# @argument $1: view
-# @argument $2: mode
-__set_prompt() {
-  view=$1
-  mode=$2
-  case "$view" in
-  "$VIEW_ARTIST")
-    name="$(mb_artist "$args" | $JQ -r '.name')"
-    PROMPT=$(printf "$ARTIST_PROMPT" "$name")
-    ;;
-  "$VIEW_RELEASEGROUP")
-    title="$(mb_releasegroup "$args" |
-      $JQ -r '.title')"
-    artist="$(mb_releasegroup "$args" |
-      $JQ -r '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
-    PROMPT=$(printf "$FULL_PROMPT" "$artist" "$title")
-    ;;
-  "$VIEW_RELEASE")
-    title="$(mb_release "$args" |
-      $JQ -r '.title')"
-    artist="$(mb_release "$args" |
-      $JQ -r '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
-    PROMPT=$(printf "$FULL_PROMPT" "$artist" "$title")
-    ;;
-  esac
-  [ "$mode" = "$MODE_INSERT" ] && PT="$PROMPT_INSERT" || PT="$PROMPT_NORMAL"
-  printf "+change-header(%s %s)" "$PT" "${PROMPT:-"$SEARCH_PROMPT"}"
-}
-
 # Reload hook that is used after change in query
 fzf_reload_after_change() {
   # Wait for async. process to terminate
@@ -108,7 +60,7 @@ fzf_handle_change() {
   sleep 1
   if [ "$view" = "$VIEW_SEARCH_ARTIST" ]; then
     api_mb_search_artist "$FZF_QUERY" |
-      $JQ -r '.artists[] | [
+      $JQ '.artists[] | [
     .id,
     .type,
     .name,
@@ -127,7 +79,7 @@ fzf_handle_change() {
       true
   else
     api_mb_search_releasegroup "$FZF_QUERY" |
-      $JQ -r '."release-groups"[] | [ 
+      $JQ '."release-groups"[] | [ 
     .id,
     ."primary-type",
     (."secondary-types" // []|join(";")),
diff --git a/src/sh/helper.sh b/src/sh/helper.sh
deleted file mode 100644
index 3aa9961..0000000
--- a/src/sh/helper.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-ERR="\033[38;5;196m"
-INFO="\033[38;5;75m"
-DBG=$ERR
-OFF="\033[m"
-LOGDIR="$HOME/.local/state/$APP_NAME"
-[ -d "$LOGDIR" ] || mkdir -p "$LOGDIR"
-LOGFILE="$LOGDIR/log"
-
-err() {
-  echo "${ERR}ERROR:${OFF} ${1:-}" >/dev/stderr
-}
-
-info() {
-  echo "${INFO}Info:${OFF} ${1:-}" >/dev/stderr
-}
-
-debug() {
-  echo "${DBG}DEBUG${OFF} ${INFO} [$$] $(date)${OFF}: $*" >>"$LOGFILE"
-}
diff --git a/src/sh/info.sh b/src/sh/info.sh
index f008979..4501650 100644
--- a/src/sh/info.sh
+++ b/src/sh/info.sh
@@ -1,5 +1,5 @@
+# Application information
 APP_NAME="muf"
 APP_VERSION="zero.zero"
 APP_WEBSITE="https://git.indyfac.ch/amin/muf"
 WINDOW_TITLE="🔎🎶 $APP_NAME | a simple music finder and player"
-export APP_NAME APP_VERSION APP_WEBSITE WINDOW_TITLE
diff --git a/src/sh/keys.sh b/src/sh/keys.sh
index 6d6d132..f5f7bb9 100644
--- a/src/sh/keys.sh
+++ b/src/sh/keys.sh
@@ -81,6 +81,7 @@
 # Mode selection:
 KEYS_I_NORMAL="${KEYS_I_NORMAL:-"esc"}"
 KEYS_N_INSERT="${KEYS_N_INSERT:-"a,i,/,?"}"
+export KEYS_I_NORMAL KEYS_N_INSERT
 
 # Vertical navigation:
 KEYS_DOWN="${KEYS_DOWN:-"ctrl-j,down"}"
@@ -91,6 +92,8 @@ KEYS_N_DOWN="${KEYS_N_DOWN:-"j"}"
 KEYS_N_UP="${KEYS_N_UP:-"k"}"
 KEYS_N_BOT="${KEYS_N_BOT:-"G"}"
 KEYS_N_TOP="${KEYS_N_TOP:-"1"}"
+export KEYS_DOWN KEYS_UP KEYS_HALFPAGE_DOWN KEYS_HALFPAGE_UP KEYS_N_DOWN \
+  KEYS_N_UP KEYS_N_BOT KEYS_N_TOP
 
 # Horizontal navigation:
 KEYS_IN="${KEYS_IN:-"ctrl-l"}"
@@ -104,6 +107,9 @@ KEYS_SEARCH_ARTIST="${KEYS_SEARCH_ARTIST:-"alt-z"}"
 KEYS_SEARCH_ALBUM="${KEYS_SEARCH_ALBUM:-"alt-x"}"
 KEYS_SWITCH_ARTIST_ALBUM="${KEYS_SWITCH_ARTIST_ALBUM:-"tab"}"
 KEYS_SWITCH_LOCAL_REMOTE="${KEYS_SWITCH_LOCAL_REMOTE:-"ctrl-/"}"
+export KEYS_IN KEYS_OUT KEYS_N_IN KEYS_N_OUT KEYS_SELECT_ARTIST \
+  KEYS_LIST_ARTISTS KEYS_SELECT_ARTIST KEYS_SEARCH_ALBUM \
+  KEYS_SWITCH_ARTIST_ALBUM KEYS_SWITCH_LOCAL_REMOTE
 
 # Filtering:
 KEYS_FILTER_LOCAL="${KEYS_FILTER_LOCAL:-"alt-l"}"
@@ -118,13 +124,17 @@ KEYS_FILTER_8="${KEYS_FILTER_8:-"alt-8"}"
 KEYS_FILTER_9="${KEYS_FILTER_9:-"alt-9"}"
 KEYS_FILTER_0="${KEYS_FILTER_0:-"alt-0"}"
 KEYS_FILTER="$KEYS_FILTER_LOCAL,$KEYS_FILTER_1,$KEYS_FILTER_2,$KEYS_FILTER_3,$KEYS_FILTER_4,$KEYS_FILTER_5,$KEYS_FILTER_6,$KEYS_FILTER_7,$KEYS_FILTER_8,$KEYS_FILTER_9,$KEYS_FILTER_0"
+export KEYS_FILTER_LOCAL KEYS_FILTER_1 KEYS_FILTER_2 KEYS_FILTER_3 \
+  KEYS_FILTER_4 KEYS_FILTER_5 KEYS_FILTER_6 KEYS_FILTER_7 KEYS_FILTER_8 \
+  KEYS_FILTER_9 KEYS_FILTER_0 KEYS_FILTER
 
 # Specials:
 KEYS_BROWSE="${KEYS_BROWSE:-"alt-b"}"
 KEYS_OPEN="${KEYS_OPEN:-"alt-o"}"
 KEYS_SHOW_PLAYLIST="${KEYS_SHOW_PLAYLIST:-"ctrl-p"}"
-KEYS_QUIT="${KEYS_QUIT:-"ctrl-c,esc"}"
+KEYS_QUIT="${KEYS_QUIT:-"ctrl-c"}"
 KEYS_N_QUIT="${KEYS_N_QUIT:-"q"}"
+export KEYS_BROWSE KEYS_OPEN KEYS_SHOW_PLAYLIST KEYS_QUIT KEYS_N_QUIT
 
 # Playback:
 KEYS_PLAY="${KEYS_PLAY:-"enter"}"
@@ -145,6 +155,11 @@ KEYS_N_PLAY_PREV="${KEYS_N_PLAY_PREV:-"left,p"}"
 KEYS_N_SEEK_FORWARD="${KEYS_N_SEEK_FORWARD:-"N,f"}"
 KEYS_N_SEEK_BACKWARD="${KEYS_N_SEEK_BACKWARD:-"P,b"}"
 KEYS_N_PLAYBACK="$KEYS_N_PLAY,$KEYS_N_QUEUE,$KEYS_N_QUEUE_NEXT,$KEYS_N_TOGGLE_PLAYBACK,$KEYS_N_PLAY_NEXT,$KEYS_N_PLAY_PREV,$KEYS_N_SEEK_FORWARD,$KEYS_N_SEEK_BACKWARD"
+export KEYS_PLAY KEYS_QUEUE KEYS_QUEUE_NEXT KEYS_TOGGLE_PLAYBACK \
+  KEYS_PLAY_NEXT KEYS_PLAY_PREV KEYS_SEEK_FORWARD KEYS_SEEK_BACKWARD \
+  KEYS_PLAYBACK KEYS_N_PLAY KEYS_N_QUEUE KEYS_N_QUEUE_NEXT \
+  KEYS_N_TOGGLE_PLAYBACK KEYS_N_PLAY_NEXT KEYS_N_PLAY_PREV \
+  KEYS_N_SEEK_FORWARD KEYS_N_SEEK_BACKWARD KEYS_N_PLAYBACK
 
 # Playlist (in the playlist, there is no `insert` mode):
 KEYS_PLAYLIST_RELOAD="${KEYS_PLAYLIST_RELOAD:-"r,ctrl-r"}"
@@ -157,39 +172,7 @@ KEYS_PLAYLIST_CLEAR_BELOW="${KEYS_PLAYLIST_CLEAR_BELOW:-"D"}"
 KEYS_PLAYLIST_GOTO_RELEASE="${KEYS_PLAYLIST_GOTO_RELEASE:-"ctrl-g"}"
 KEYS_PLAYLIST_STORE="${KEYS_PLAYLIST_STORE:-"ctrl-s"}"
 KEYS_PLAYLIST_LOAD="${KEYS_PLAYLIST_LOAD:-"ctrl-o"}"
-
-## Not yet characterized
-##########################
-
-KEYS_INPUT_SINGLE='0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,!,",#,$,%,&,\,(,),*,+,,,-,.,/,:,;,<,=,>,?,@,[,\,\,],^,_,`,{,|,},~'
-KEYS_INPUT_SINGLE="$KEYS_INPUT_SINGLE,'"
-KEYS_INPUT_SPECIAL="space,backspace,delete,left,right"
-export KEYS_INPUT_SINGLE KEYS_INPUT_SPECIAL
-
-# Normal and insert mode
-KEYS_NI="$KEYS_HALFPAGE_DOWN,$KEYS_HALFPAGE_UP,$KEYS_BROWSE,$KEYS_OPEN,$KEYS_OUT,$KEYS_IN,$KEYS_SELECT_ARTIST,$KEYS_FILTER_LOCAL,$KEYS_FILTER_1,$KEYS_FILTER_2,$KEYS_FILTER_3,$KEYS_FILTER_4,$KEYS_SWITCH_ARTIST_ALBUM,$KEYS_SWITCH_LOCAL_REMOTE,$KEYS_PLAY,$KEYS_QUEUE,$KEYS_SHOW_PLAYLIST"
-export KEYS_NI
-
-# Keys in normal mode only
-KEYS_N="$KEYS_N_DOWN,$KEYS_N_UP,$KEYS_N_OUT,$KEYS_N_IN,$KEYS_N_TOP,$KEYS_N_BOT,$KEYS_N_QUIT,$KEYS_N_INSERT,$KEYS_N_TOGGLE_PLAYBACK,$KEYS_N_PLAY_NEXT,$KEYS_N_PLAY_PREV,$KEYS_N_SEEK_FORWARD,$KEYS_N_SEEK_BACKWARD"
-export KEYS_N
-
-# Keys in insert mode only
-KEYS_I="$KEYS_I_NORMAL"
-export KEYS_I
-
-# Special playlist keys
-KEYS_PLAYLIST="$KEYS_PLAYLIST_RELOAD"
-export KEYS_PLAYLIST
-
-# Grouping
-KEYS_ALL="$KEYS_NI,$KEYS_N,$KEYS_I,$KEYS_INPUT_SINGLE,$KEYS_INPUT_SPECIAL,$KEYS_PLAYLIST"
-
-export KEYS_HALFPAGE_DOWN KEYS_HALFPAGE_UP KEYS_OPEN KEYS_BROWSE KEYS_OUT KEYS_IN \
-  KEYS_SELECT_ARTIST KEYS_FILTER_LOCAL KEYS_FILTER_1 KEYS_FILTER_2 KEYS_FILETER_3 KEYS_FILTER_4 \
-  KEYS_SWITCH_ARTIST_ALBUM KEYS_SWITCH_LOCAL_REMOTE KEYS_PLAY KEYS_QUEUE \
-  KEYS_N_DOWN KEYS_N_UP KEYS_N_OUT KEYS_N_IN KEYS_N_TOP KEYS_N_BOT KEYS_N_QUIT KEYS_N_INSERT \
-  KEYS_N_TOGGLE_PLAYBACK KEYS_N_PLAY_NEXT KEYS_N_PLAY_PREV KEYS_N_SEEK_FORWARD \
-  KEYS_N_SEEK_BACKWARD KEYS_SHOW_PLAYLIST \
-  KEYS_I_NORMAL \
-  KEYS_GROUP_NI KEYS_GROUP_N KEYS_GROUP_I KEYS PLAYLIST KEYS_ALL
+export KEYS_PLAYLIST_RELOAD KEYS_PLAYLIST_REMOVE KEYS_PLAYLIST_UP \
+  KEYS_PLAYLIST_DOWN KEYS_PLAYLIST_CLEAR KEYS_PLAYLIST_CLEAR_ABOVE \
+  KEYS_PLAYLIST_CLEAR_BELOW KEYS_PLAYLIST_GOTO_RELEASE KEYS_PLAYLIST_STORE \
+  KEYS_PLAYLIST_LOAD
diff --git a/src/sh/lists.sh b/src/sh/lists.sh
index e974fa6..c94936d 100644
--- a/src/sh/lists.sh
+++ b/src/sh/lists.sh
@@ -1,9 +1,9 @@
 # List release groups of given artist
 # argument $1: MB artist id
 list_releasegroups() {
-  name=$(mb_artist "$1" | $JQ -r '.name')
+  name=$(mb_artist "$1" | $JQ '.name')
   mb_artist_releasegroups "$1" |
-    $JQ -r '."release-groups"[] | [
+    $JQ '."release-groups"[] | [
   .id,
   ."primary-type",
   (."secondary-types" // []|join(";")),
@@ -50,11 +50,11 @@ list_releasegroups() {
 # argument $1: MB release-group id
 list_releases() {
   title="$(mb_releasegroup "$1" |
-    $JQ -r '.title')"
+    $JQ '.title')"
   artist="$(mb_releasegroup "$1" |
-    $JQ -r '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
+    $JQ '."artist-credit" | map(([.name, .joinphrase]|join(""))) | join("")')"
   mb_releasegroup_releases "$1" |
-    $JQ -r '."releases"[] | [
+    $JQ '."releases"[] | [
   .id,
   .status,
   .date,
@@ -97,10 +97,10 @@ list_recordings() {
   deco="$(grep "$1" "$LOCALDATA_RELEASES" | cut -d "$(printf '\t')" -f 2)"
   if [ "$deco" ]; then
     rectmp=$(mktemp)
-    $JQ -r '.tracks | keys | join("\n")' "$deco" >"$rectmp"
+    $JQ '.tracks | keys | join("\n")' "$deco" >"$rectmp"
   fi
   mb_release "$1" |
-    $JQ -r \
+    $JQ \
       --arg rid "$1" \
       --arg deco "$deco" \
       '.media[] |
@@ -146,51 +146,10 @@ list_local_releases() {
   cat "$LOCALDATA_RELEASES_VIEW" 2>/dev/null
 }
 
-# Generate playlist from MB release ID and path to decoration
-# @argument $1: MusicBrainz Release ID
-# @argument $2: Path to decoration file
-# @argument $3: MusicBrainz Track ID to select (optional)
-generate_playlist() {
-  printf "#EXTM3U\n"
-  dir="$(dirname "$2")"
-  mb_release "$1" |
-    $JQ -r \
-      --slurpfile decofile "$2" \
-      --arg base "$dir" \
-      --arg deco "$2" \
-      --arg tid "${3:-}" \
-      '$decofile[].tracks as $filenames |
-        . |
-        .id as $rid |
-        .media[] |
-        .position as $pos |
-        .tracks |
-        if ($tid == "") then . else map(select(.id == $tid)) end |
-        map({
-          t: [
-          $rid,
-          .id,
-          $pos,
-          .number,
-          .length,
-          .title,
-          (."artist-credit" | map([.name, .joinphrase] | join("")) | join("")),
-          $deco
-          ] | join("\t"),
-          length: (.length / 1000 | round | tostring),
-          $pos,
-          number: .number,
-          file: $filenames[.id]
-        }) |
-        map(if(.number | type == "string" and test("^[0-9]+$")) then .number |= tonumber else . end) |
-        sort_by([.pos, .number]) |
-        map("#EXTINF:" + .length + "," + .t + "\n" + $base + "/" + .file)[]'
-}
-
 # Generate artist list from JSON
 list_artists_from_json() {
   cat |
-    $JQ -r 'map([.artist.id, .artist.type, .name] | join("\t")) | join("\n")' |
+    $JQ 'map([.artist.id, .artist.type, .name] | join("\t")) | join("\n")' |
     awk \
       -F "\t" \
       -v file_local_artists="${LOCALDATA_ARTISTS:-}" \
diff --git a/src/sh/local.sh b/src/sh/local.sh
index bd64c77..81a6fbd 100644
--- a/src/sh/local.sh
+++ b/src/sh/local.sh
@@ -1,6 +1,6 @@
 gettags() {
   ffprobe -v error -show_entries format_tags -print_format json "$1" |
-    $JQ -r --compact-output '.format.tags | {
+    $JQ '.format.tags | {
       trackid: (."MusicBrainz Release Track Id" // ."MUSICBRAINZ_RELEASETRACKID" // ."MusicBrainz/Release Track Id" // ""),
       releaseid: (."MusicBrainz Album Id" // ."MUSICBRAINZ_ALBUMID" // ."MusicBrainz/Album Id" // "")
     }'
@@ -19,8 +19,8 @@ decorate() {
   (cd "$1" && find . -type f -iname '*.mp3' -o -iname '*.mp4' -o -iname '*.flac' -o -iname '*.m4a') >"$tmpf"
   while IFS= read -r f; do
     mbid=$(gettags "$1/$f")
-    rid=$(echo "$mbid" | $JQ -r '.releaseid')
-    tid=$(echo "$mbid" | $JQ -r '.trackid')
+    rid=$(echo "$mbid" | $JQ '.releaseid')
+    tid=$(echo "$mbid" | $JQ '.trackid')
     if [ ! "$rid" ] || [ ! "$tid" ]; then
       err "File $f: Seems not tagged"
       releaseid=""
@@ -40,7 +40,7 @@ decorate() {
   done <"$tmpf"
   rm -f "$tmpf"
   if [ "$releaseid" ]; then
-    echo "$decoration" | $JQ --compact-output ".releaseid = \"$releaseid\"" >"$1/$DECORATION_FILENAME"
+    echo "$decoration" | $JQ ".releaseid = \"$releaseid\"" >"$1/$DECORATION_FILENAME"
   else
     return 1
   fi
@@ -75,13 +75,13 @@ __batch_load_missing() {
       while IFS= read -r mbid; do
         case "$1" in
         "$TYPE_ARTIST")
-          name=$(mb_artist "$mbid" | $JQ -r ".name")
+          name=$(mb_artist "$mbid" | $JQ ".name")
           ;;
         "$TYPE_RELEASEGROUP")
-          name=$(mb_releasegroup "$mbid" | $JQ -r ".title")
+          name=$(mb_releasegroup "$mbid" | $JQ ".title")
           ;;
         "$TYPE_RELEASE")
-          name=$(mb_release "$mbid" | $JQ -r ".title")
+          name=$(mb_release "$mbid" | $JQ ".title")
           ;;
         esac
         cnt=$((cnt + 1))
@@ -107,7 +107,7 @@ DECORATION_FILENAME=${DECORATION_FILENAME:-"mbid.json"}
 precompute_view() {
   info "Precomputing artist view"
   while IFS= read -r aid; do
-    mb_artist "$aid" | $JQ -r '[
+    mb_artist "$aid" | $JQ '[
     .id,
     .type,
     .name,
@@ -129,7 +129,7 @@ precompute_view() {
     sed 's| \+\([0-9a-f-]\+\) \+\([0-9a-f-]\+\)$|\t\1\t\2|' >"$LOCALDATA_ARTISTS_VIEW"
   info "Precomputing releasegroup view"
   while IFS= read -r rgid; do
-    mb_releasegroup "$rgid" | $JQ -r '[
+    mb_releasegroup "$rgid" | $JQ '[
     .id,
     ."primary-type",
     (."secondary-types" // []|join(";")),
@@ -172,7 +172,7 @@ precompute_view() {
   info "Precomputing release view"
   cut -d "$(printf '\t')" -f 1 "$LOCALDATA_RELEASES" |
     while IFS= read -r rid; do
-      mb_release "$rid" | $JQ -r '[
+      mb_release "$rid" | $JQ '[
       .id,
       .status,
       .date,
@@ -215,15 +215,15 @@ load_local() {
   [ -f "$tmpreleases" ] || exit 1
   info "Locating and parsing decoration files ($DECORATION_FILENAME)"
   find "$1" -type f -name "$DECORATION_FILENAME" -print0 |
-    xargs -0 -P 4 $JQ -r '.releaseid+"\t"+input_filename' |
+    xargs -0 -P 4 $JQ '.releaseid+"\t"+input_filename' |
     tee "$LOCALDATA_RELEASES" |
     cut -d "$(printf '\t')" -f 1 >"$tmpreleases"
   __batch_load_missing "$TYPE_RELEASE" "$tmpreleases"
   # Get release groups and album artists
   while IFS= read -r rid; do
     mb=$(mb_release "$rid")
-    echo "$mb" | $JQ -r '."release-group".id' >>"$LOCALDATA_RELEASEGROUPS"
-    echo "$mb" | $JQ -r '."release-group"."artist-credit" | map(.artist.id) | join("\n")' >>"$LOCALDATA_ARTISTS"
+    echo "$mb" | $JQ '."release-group".id' >>"$LOCALDATA_RELEASEGROUPS"
+    echo "$mb" | $JQ '."release-group"."artist-credit" | map(.artist.id) | join("\n")' >>"$LOCALDATA_ARTISTS"
   done <"$tmpreleases"
   tf=$(mktemp)
   sort "$LOCALDATA_RELEASEGROUPS" | uniq >"$tf" && mv "$tf" "$LOCALDATA_RELEASEGROUPS"
diff --git a/src/sh/log.sh b/src/sh/log.sh
new file mode 100644
index 0000000..7334daf
--- /dev/null
+++ b/src/sh/log.sh
@@ -0,0 +1,15 @@
+# Logging methods
+ERR="\033[38;5;196m"
+INFO="\033[38;5;75m"
+OFF="\033[m"
+LOGDIR="$HOME/.local/state/$APP_NAME"
+[ -d "$LOGDIR" ] || mkdir -p "$LOGDIR"
+LOGFILE="$LOGDIR/log"
+
+err() {
+  echo "$(date) [$$]>${ERR}ERROR:${OFF} ${1:-}" | tee -a "$LOGFILE" | cut -d ">" -f 2- >/dev/stderr
+}
+
+info() {
+  echo "$(date) [$$]>${INFO}Info:${OFF} ${1:-}" | tee -a "$LOGFILE" | cut -d ">" -f 2- >/dev/stderr
+}
diff --git a/src/sh/mb.sh b/src/sh/mb.sh
index f7688fa..4fa8c2e 100644
--- a/src/sh/mb.sh
+++ b/src/sh/mb.sh
@@ -27,7 +27,7 @@ __mb_artist_cache_or_fetch_releasegroups() {
   if ! cache_get_artist_releasegroups "$1"; then
     api_mb_browse_artist_releasegroups "$1" | cache_put_artist_releasegroups "$1"
     rg="$(cache_get_artist_releasegroups "$1")"
-    total=$(printf "%s" "$rg" | $JQ -r '."release-group-count"')
+    total=$(printf "%s" "$rg" | $JQ '."release-group-count"')
     seen=$MB_BROWSE_STEPS
     while [ "$total" -gt "$seen" ]; do
       # Fetch remaning release groups, and append to cache
@@ -43,7 +43,7 @@ __mb_releasegroup_cache_or_fetch_releases() {
   if ! cache_get_releasegroup_releases "$1"; then
     api_mb_browse_releasegroup_releases "$1" | cache_put_releasegroup_releases "$1"
     releases="$(cache_get_releasegroup_releases "$1")"
-    total=$(printf "%s" "$releases" | $JQ -r '."release-count"')
+    total=$(printf "%s" "$releases" | $JQ '."release-count"')
     seen=$MB_BROWSE_STEPS
     while [ "$total" -gt "$seen" ]; do
       # Fetch remaning releases, and append to cache
@@ -66,7 +66,7 @@ mb_artist() {
 mb_artist_wikidata() {
   if ! cache_get_artist_wikidata "$1"; then
     wikidataid=$(mb_artist "$1" |
-      $JQ -r '.relations |
+      $JQ '.relations |
       map(select(.type=="wikidata")) |
       .[0].url.resource // ""' |
       awk -F "/" '{print $NF}')
@@ -89,7 +89,7 @@ mb_artist_enwikipedia() {
     # take the second route.
     wikidata=$(mb_artist_wikidata "$1" || true)
     wikiid=$(printf "%s" "$wikidata" |
-      $JQ -r '.enwiki.url // ""' |
+      $JQ '.enwiki.url // ""' |
       awk -F "/" '{print $NF}')
     [ ! "$wikiid" ] && return
     api_wikipedia_en_summary "$wikiid" | cache_put_artist_enwikipedia "$1"
@@ -102,7 +102,7 @@ mb_artist_enwikipedia() {
 mb_artist_discogs() {
   if ! cache_get_artist_discogs "$1"; then
     discogsid=$(mb_artist "$1" |
-      $JQ -r '.relations |
+      $JQ '.relations |
       map(select(.type=="discogs")) |
       .[0].url.resource // ""' |
       awk -F "/" '{print $NF}')
diff --git a/src/sh/mpv.sh b/src/sh/mpv.sh
index aa4a04a..4fac3fc 100644
--- a/src/sh/mpv.sh
+++ b/src/sh/mpv.sh
@@ -11,7 +11,7 @@ __mpv_command_with_args2() {
 }
 
 __mpv_get() {
-  __mpv_command_with_arg "expand-text" "$1" | $JQ -r '.data'
+  __mpv_command_with_arg "expand-text" "$1" | $JQ '.data'
 }
 
 mpv_playlist_count() {
diff --git a/src/sh/playback.sh b/src/sh/playback.sh
index 802bdba..23657b0 100644
--- a/src/sh/playback.sh
+++ b/src/sh/playback.sh
@@ -1,3 +1,8 @@
+# Playback tools and helper
+#
+# The methods to control the mpv instance are in `src/sh/mpv.sh`. Here,
+# a higher-level playback functionality is provided.
+
 # Available playback commands
 PLAYBACK_CMD_PLAY="play"
 PLAYBACK_CMD_QUEUE="queue"
@@ -10,7 +15,7 @@ PLAYBACK_CMD_SEEK_BACKWARD="seekb"
 
 # Obtain playback command from key press
 # @argument $1: key
-playback_cmd_from_key() {
+__playback_cmd_from_key() {
   key=$1
   case ",$KEYS_PLAY," in *",$key,"*) echo "$PLAYBACK_CMD_PLAY" && return ;; esac
   case ",$KEYS_N_PLAY," in *",$key,"*) echo "$PLAYBACK_CMD_PLAY" && return ;; esac
@@ -29,3 +34,97 @@ playback_cmd_from_key() {
   case ",$KEYS_SEEK_BACKWARD," in *",$key,"*) echo "$PLAYBACK_CMD_SEEK_BACKWARD" && return ;; esac
   case ",$KEYS_N_SEEK_BACKWARD," in *",$key,"*) echo "$PLAYBACK_CMD_SEEK_BACKWARD" && return ;; esac
 }
+
+# Generate playlist from MB release ID and path to decoration
+# @argument $1: MusicBrainz Release ID
+# @argument $2: Path to decoration file
+# @argument $3: MusicBrainz Track ID to select (optional)
+__generate_playlist() {
+  printf "#EXTM3U\n"
+  dir="$(dirname "$2")"
+  mb_release "$1" |
+    $JQ \
+      --slurpfile decofile "$2" \
+      --arg base "$dir" \
+      --arg deco "$2" \
+      --arg tid "${3:-}" \
+      '$decofile[].tracks as $filenames |
+        . |
+        .id as $rid |
+        .media[] |
+        .position as $pos |
+        .tracks |
+        if ($tid == "") then . else map(select(.id == $tid)) end |
+        map({
+          t: [
+          $rid,
+          .id,
+          $pos,
+          .number,
+          .length,
+          .title,
+          (."artist-credit" | map([.name, .joinphrase] | join("")) | join("")),
+          $deco
+          ] | join("\t"),
+          length: (.length / 1000 | round | tostring),
+          $pos,
+          number: .number,
+          file: $filenames[.id]
+        }) |
+        map(if(.number | type == "string" and test("^[0-9]+$")) then .number |= tonumber else . end) |
+        sort_by([.pos, .number]) |
+        map("#EXTINF:" + .length + "," + .t + "\n" + $base + "/" + .file)[]'
+}
+
+# Main playback method
+#
+# @argument $1: view
+# @argument $2: MusicBrainz ID of current object
+# @argument $3: MusicBrainz ID of selected object
+# @argument $4: Path to decoration file
+#
+# This option controls the mpv instance via a key pressed in fzf. The key
+# pressed is stored in the environment variable FZF_KEY and is resolved to
+# the playback command through the method `__playback_cmd_from_key`.
+playback() {
+  view=${1:-}
+  mbid_current="${2:-}"
+  mbid="${3:-}"
+  path="${4:-}"
+  pbcmd=$(__playback_cmd_from_key "$FZF_KEY")
+  info "playback(): view=$view; mbid_current=$mbid_current; mbid=$mbid; path=$path; pbcmd=$pbcmd"
+  case "$pbcmd" in
+  "$PLAYBACK_CMD_PLAY")
+    [ "$path" ] || exit 0
+    case "$view" in
+    "$VIEW_ARTIST" | "$VIEW_SEARCH_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") info "not implemented" ;;
+    "$VIEW_RELEASEGROUP") __generate_playlist "$mbid" "$path" | mpv_play_list >/dev/null ;;
+    "$VIEW_RELEASE") __generate_playlist "$mbid_current" "$path" "$mbid" | mpv_play_list >/dev/null ;;
+    "$VIEW_PLAYLIST") mpv_play_index $((FZF_POS - 1)) >/dev/null ;;
+    esac
+    ;;
+  "$PLAYBACK_CMD_QUEUE")
+    [ "$path" ] || exit 0
+    case "$view" in
+    "$VIEW_ARTIST" | "$VIEW_SEARCH_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") info "not implemented" ;;
+    "$VIEW_RELEASEGROUP") __generate_playlist "$mbid" "$path" | mpv_queue_list >/dev/null ;;
+    "$VIEW_RELEASE") __generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_list >/dev/null ;;
+    "$VIEW_PLAYLIST") __generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_list >/dev/null ;;
+    esac
+    ;;
+  "$PLAYBACK_CMD_QUEUE_NEXT")
+    [ "$path" ] || exit 0
+    case "$view" in
+    "$VIEW_ARTIST" | "$VIEW_SEARCH_ARTIST" | "$VIEW_SEARCH_ALBUM" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") info "not implemented" ;;
+    "$VIEW_RELEASEGROUP") __generate_playlist "$mbid" "$path" | mpv_queue_next_list >/dev/null ;;
+    "$VIEW_RELEASE") __generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_next_list >/dev/null ;;
+    "$VIEW_PLAYLIST") __generate_playlist "$mbid_current" "$path" "$mbid" | mpv_queue_next_list >/dev/null ;;
+    esac
+    ;;
+  "$PLAYBACK_CMD_TOGGLE_PLAYBACK") mpv_toggle_pause ;;
+  "$PLAYBACK_CMD_PLAY_NEXT") mpv_next ;;
+  "$PLAYBACK_CMD_PLAY_PREV") mpv_prev ;;
+  "$PLAYBACK_CMD_SEEK_FORWARD") mpv_seek_forward ;;
+  "$PLAYBACK_CMD_SEEK_BACKWARD") mpv_seek_backward ;;
+  esac
+}
diff --git a/src/sh/playlist.sh b/src/sh/playlist.sh
index 511ed7e..9881d44 100644
--- a/src/sh/playlist.sh
+++ b/src/sh/playlist.sh
@@ -4,3 +4,29 @@ PLAYLIST_CMD_DOWN="down"
 PLAYLIST_CMD_CLEAR="clear"
 PLAYLIST_CMD_CLEAR_ABOVE="clear-above"
 PLAYLIST_CMD_CLEAR_BELOW="clear-below"
+
+# Run playback commands
+#
+# @argument $1: playlist command
+#
+# This is a wrapper to execute mpv commands.
+playlist() {
+  case "$1" in
+  "$PLAYLIST_CMD_REMOVE") mpv_rm_index $((FZF_POS - 1)) ;;
+  "$PLAYLIST_CMD_UP") mpv_playlist_move $((FZF_POS - 1)) $((FZF_POS - 2)) ;;
+  "$PLAYLIST_CMD_DOWN") mpv_playlist_move $((FZF_POS - 0)) $((FZF_POS - 1)) ;;
+  "$PLAYLIST_CMD_CLEAR") mpv_playlist_clear ;;
+  "$PLAYLIST_CMD_CLEAR_ABOVE")
+    for i in $(seq "$FZF_POS"); do
+      mpv_rm_index 0
+    done
+    ;;
+  "$PLAYLIST_CMD_CLEAR_BELOW")
+    cnt=$(mpv_playlist_count)
+    rem=$((cnt - FZF_POS + 1))
+    for i in $(seq "$rem"); do
+      mpv_rm_index $((FZF_POS - 1))
+    done
+    ;;
+  esac
+}
diff --git a/src/sh/preview.sh b/src/sh/preview.sh
index c1d307d..06a9b8c 100644
--- a/src/sh/preview.sh
+++ b/src/sh/preview.sh
@@ -5,14 +5,14 @@ __shape() {
 # Print preview of artist
 # @input $1: MusicBrainz Artist ID
 __preview_artist() {
-  desc=$(mb_artist_enwikipedia "$1" | $JQ -r '.extract' | __shape)
-  [ "$desc" ] || desc=$(mb_artist_discogs "$1" | $JQ -r '.profile' | sed 's/\[a=\([^]]*\)\]/\1/g' | __shape)
-  if [ "$(mb_artist "$1" | $JQ -r '.type')" = "Person" ]; then
+  desc=$(mb_artist_enwikipedia "$1" | $JQ '.extract' | __shape)
+  [ "$desc" ] || desc=$(mb_artist_discogs "$1" | $JQ '.profile' | sed 's/\[a=\([^]]*\)\]/\1/g' | __shape)
+  if [ "$(mb_artist "$1" | $JQ '.type')" = "Person" ]; then
     # Show birth place and death place of person
-    lsb=$(mb_artist "$1" | $JQ -r '."life-span".begin // ""' | head -c 4)
-    lse=$(mb_artist "$1" | $JQ -r '."life-span".end // ""' | head -c 4)
-    ab=$(mb_artist "$1" | $JQ -r '."begin-area".name // ""')
-    ae=$(mb_artist "$1" | $JQ -r '."end-area".name // ""')
+    lsb=$(mb_artist "$1" | $JQ '."life-span".begin // ""' | head -c 4)
+    lse=$(mb_artist "$1" | $JQ '."life-span".end // ""' | head -c 4)
+    ab=$(mb_artist "$1" | $JQ '."begin-area".name // ""')
+    ae=$(mb_artist "$1" | $JQ '."end-area".name // ""')
     if [ "$lsb" ] && [ "$ab" ]; then
       begin=$(printf "$APV_DATEPLACE" "$lsb" "$ab")
     elif [ "$lsb" ]; then
diff --git a/src/sh/query.sh b/src/sh/query.sh
new file mode 100644
index 0000000..ca9d23b
--- /dev/null
+++ b/src/sh/query.sh
@@ -0,0 +1,155 @@
+# The default queries depend on the current view, and are usually derived from
+# the theme. Nevertheless, they may be overwritten with the configuration file.
+# Note that filters are not used in the views VIEW_SEARCH_ARTIST and
+# VIEW_SEARCH_ALBUM. The reason for this is that in those modes, changing the
+# query string triggers a search on the MusicBrainz website (the input is not a
+# filter, but a query).
+#
+# The keybinding KEYS_FILTER_LOCAL triggers a filter of QUERY_LOCAL in the
+# views VIEW_ARTIST, VIEW_RELEASEGROUP, and VIEW_RELEASE only. Here, it is only
+# possible to adjust QUERY_LOCAL via the configuration. The keybinding KEYS_FILTER_0
+# resets the query. F_1_.. filters are the default filters when the respective
+# view is entered. For all other keys, the filters are individually
+# configurable, by specifying e.g., F_3_VIEW_LIST_ALBUMS.
+#
+# Derived queries
+# To derive the queries from the theme, we must perform some steps: 1) remove
+# colors, and 2) escape white spaces. This is implemented in the method
+# `__clean_filter`.
+#
+# List of derived queries:
+# - QUERY_LOCAL: Hide items that are not locally available
+# - q_has_secondary: Release groups with secondary types
+# - q_album: Release group is of type Album
+# - q_ep: Release group is of type EP
+# - q_single: Release group is of type single
+# - q_official: Release is official
+
+__clean_filter() {
+  cat | sed "s/${ESC}\[[0-9;]*[mK]//g" | sed "s/ /\\\ /g"
+}
+
+# Determine preset query
+# @argument $1: Current view
+# @argument $2: Key pressed (optional)
+#
+# If the key is not given, then the F_1_.. query is used for the respective
+# view, i.e, its as if a key from KEYS_FILTER_1 has been pressed.
+default_query() {
+  view=$1
+  key="${2:-"$(echo "$KEYS_FILTER_1" | cut -d ',' -f 1)"}"
+  case ",$KEYS_FILTER_LOCAL," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST" | "$VIEW_RELEASEGROUP" | "$VIEW_RELEASE") echo "$QUERY_LOCAL" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_1," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_1_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_1_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_1_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_1_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_1_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_2," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_2_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_2_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_2_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_2_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_2_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_3," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_3_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_3_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_3_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_3_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_3_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_4," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_4_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_4_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_4_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_4_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_4_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_5," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_5_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_5_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_5_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_5_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_5_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_6," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_6_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_6_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_6_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_6_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_6_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_7," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_7_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_7_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_7_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_7_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_7_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_8," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_8_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_8_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_8_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_8_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_8_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  case ",$KEYS_FILTER_9," in
+  *",$key,"*)
+    case "$view" in
+    "$VIEW_ARTIST") echo "$F_9_VIEW_ARTIST" ;;
+    "$VIEW_RELEASEGROUP") echo "$F_9_VIEW_RELEASEGROUP" ;;
+    "$VIEW_RELEASE") echo "$F_9_VIEW_RELEASE" ;;
+    "$VIEW_LIST_ARTISTS") echo "$F_9_LIST_ARTISTS" ;;
+    "$VIEW_LIST_ALBUMS") echo "$F_9_LIST_ALBUMS" ;;
+    esac
+    ;;
+  esac
+  # Doing nothing is the same as this last block:
+  # case ",$KEYS_FILTER_0," in
+  # *",$key,"*)
+  #   case "$view" in
+  #   "$VIEW_ARTIST" | "$VIEW_RELEASEGROUP" | "$VIEW_RELEASE" | "$VIEW_LIST_ARTISTS" | "$VIEW_LIST_ALBUMS") echo "" ;;
+  #   esac
+  #   ;;
+  # esac
+}
diff --git a/src/sh/theme.sh b/src/sh/theme.sh
index cab687b..d2fa7e5 100644
--- a/src/sh/theme.sh
+++ b/src/sh/theme.sh
@@ -23,6 +23,7 @@ OFF="${ESC}[m"
 FORMAT_LOCAL="${FORMAT_LOCAL:-"🔆"}"
 # Pointer to the track currently playing (playlist)
 FORMAT_CURRENT="${FORMAT_CURRENT:-"👉"}"
+export FORMAT_LOCAL FORMAT_CURRENT
 
 # Input prompts
 # =============
@@ -33,6 +34,7 @@ ARTIST_PROMPT="${ARTIST_PROMPT:-"🎤 ${CARTIST}%s$OFF 〉"}"
 # Prompt that takes an artist name and a release name as arguments (in that
 # order)
 FULL_PROMPT="${FULL_PROMPT:-"🎤 ${CARTIST}%s$OFF 》${CTITLE}%s$OFF 〉"}"
+export SEARCH_PROMPT ARTIST_PROMPT FULL_PROMPT
 
 # Visual representation of current mode
 # =====================================
@@ -40,6 +42,7 @@ FULL_PROMPT="${FULL_PROMPT:-"🎤 ${CARTIST}%s$OFF 》${CTITLE}%s$OFF 〉"}"
 PROMPT_NORMAL="${PROMPT_NORMAL:-"${FAINT}[n]${OFF}"}"
 # Sign to indicate `insert` mode
 PROMPT_INSERT="${PROMPT_INSERT:-"${FAINT}[i]${OFF}"}"
+export PROMPT_NORMAL PROMPT_INSERT
 
 # Artist view
 # ===========
@@ -49,6 +52,7 @@ AV_PERSON="${AV_PERSON:-"🧑‍🎤 $CARTIST<<name>>$OFF"}"
 AV_GROUP="${AV_GROUP:-"🧑‍🤝‍🧑 $CARTIST<<name>>$OFF"}"
 # Artist disambiguation string
 AV_DISAMBIGUATION="${AV_DISAMBIGUATION:-"$CDISAMB(<<disambiguation>>)$OFF"}"
+export AV_PERSON AV_GROUP AV_DISAMBIGUATION
 
 # Release-group view
 # ==================
@@ -58,6 +62,7 @@ RGV_RELEASE="${RGV_RELEASE:-"${CTITLE}<<title>>$OFF"}"
 RGV_RELEASE_W_ARTIST="${RGV_RELEASE_W_ARTIST:-"${CTITLE}<<title>>$OFF — ${CARTIST}<<artist>>$OFF"}"
 # Year of the release group
 RGV_YEAR="${RGV_YEAR:-"${CYEAR}(<<year>>)$OFF"}"
+export RGV_RELEASE RGV_RELEASE_W_ARTIST RGV_YEAR
 
 # Release-group types
 # ===================
@@ -88,6 +93,15 @@ FORMAT_TYPE_SECONDARY_DJMIX="${FORMAT_TYPE_SECONDARY_DJMIX:-"🪩 DJ-mix"}"
 FORMAT_TYPE_SECONDARY_MIXTAPE="${FORMAT_TYPE_SECONDARY_MIXTAPE:-"📼 mixtape"}"
 FORMAT_TYPE_SECONDARY_DEMO="${FORMAT_TYPE_SECONDARY_DEMO:-"🧪 demo"}"
 FORMAT_TYPE_SECONDARY_FIELDREC="${FORMAT_TYPE_SECONDARY_FIELDREC:-"🌿 field recording"}"
+export FORMAT_TYPE_ALBUM FORMAT_TYPE_EP FORMAT_TYPE_SINGLE \
+  FORMAT_TYPE_BROADCAST FORMAT_TYPE_OTHER FORMAT_TYPE_HAS_SECONDARY \
+  FORMAT_TYPE_SECONDARY FORMAT_TYPE_SECONDARY_COMPILATION \
+  FORMAT_TYPE_SECONDARY_SOUNDTRACK FORMAT_TYPE_SECONDARY_SPOKENWORD \
+  FORMAT_TYPE_SECONDARY_INTERVIEW FORMAT_TYPE_SECONDARY_AUDIOBOOK \
+  FORMAT_TYPE_SECONDARY_AUDIODRAMA FORMAT_TYPE_SECONDARY_LIVE \
+  FORMAT_TYPE_SECONDARY_REMIX FORMAT_TYPE_SECONDARY_DJMIX \
+  FORMAT_TYPE_SECONDARY_MIXTAPE FORMAT_TYPE_SECONDARY_DEMO \
+  FORMAT_TYPE_SECONDARY_FIELDREC
 
 # Artist Preview
 # ==============
@@ -104,6 +118,7 @@ APV_DATEPLACE="${APV_DATEPLACE:-"$APV_DATE, $APV_PLACE"}"
 APV_BORN="${APV_BORN:-"🍼 Born: %s"}"
 # String to represent when/where a person died
 APV_DIED="${APV_DIED:-"🕯️ Died: %s"}"
+export APV_FORMAT APV_DATE APV_PLACE APV_DATEPLACE APV_BORN APV_DIED
 
 # Release view
 # ============
@@ -115,6 +130,7 @@ RV_TITLE_ARTIST="${RV_TITLE_ARTIST:-"${FAINT}as ${CTITLE}<<title>>$OFF by ${FAIN
 RV_TITLE="${RV_TITLE:-"${FAINT}as ${CTITLE}<<title>>$OFF"}"
 # Additional string to display the artist
 RV_ARTIST="${RV_ARTIST:-"${FAINT}by ${CARTIST}<<artist>>$OFF"}"
+export RV_FORMAT RV_TITLE_ARTIST RV_TITLE RV_ARTIST
 
 # Release Status
 # ==============
@@ -125,6 +141,9 @@ FORMAT_STATUS_PSEUDO="${FORMAT_STATUS_PSEUDO:-"🌀"}"
 FORMAT_STATUS_WITHDRAWN="${FORMAT_STATUS_WITHDRAWN:-"🔙"}"
 FORMAT_STATUS_EXPUNGED="${FORMAT_STATUS_EXPUNGED:-"🧹"}"
 FORMAT_STATUS_CANCELLED="${FORMAT_STATUS_CANCELLED:-"❌"}"
+export FORMAT_STATUS_OFFICIAL FORMAT_STATUS_PROMO FORMAT_STATUS_BOOTLEG \
+  FORMAT_STATUS_PSEUDO FORMAT_STATUS_WITHDRAWN FORMAT_STATUS_EXPUNGED \
+  FORMAT_STATUS_CANCELLED
 
 # Recording view
 # ==============
@@ -132,3 +151,4 @@ FORMAT_STATUS_CANCELLED="${FORMAT_STATUS_CANCELLED:-"❌"}"
 REC_FORMAT="${REC_FORMAT:-"${CNOTE}${FAINT}<<med>>\t${CNOTE}<<nr>>$OFF\t${CTITLE}<<title>>\t${CARTIST}<<artist>>\t${CXXX}<<duration>>$OFF"}"
 # Format of a track in the playlist
 REC_FORMAT_NO_NUMBER="${REC_FORMAT_NO_NUMBER:-"${CTITLE}<<title>>\t${CARTIST}<<artist>>\t${CXXX}<<duration>>$OFF"}"
+export REC_FORMAT REC_FORMAT_NO_NUMBER
diff --git a/src/sh/tools.sh b/src/sh/tools.sh
index 5211c2d..7d5ac08 100644
--- a/src/sh/tools.sh
+++ b/src/sh/tools.sh
@@ -1,39 +1,43 @@
-if command -v "fzf" >/dev/null; then
-  FZF="fzf --black --ansi --cycle --tiebreak=chunk,index"
-else
-  err "Did not find the command-line fuzzy finder fzf."
-  exit 1
-fi
-export FZF
+if [ ! "${TOOLS_LOADED:-}" ]; then
+  if command -v "fzf" >/dev/null; then
+    FZF="fzf --black --ansi --cycle --tiebreak=chunk,index"
+  else
+    err "Did not find the command-line fuzzy finder fzf."
+    exit 1
+  fi
+  export FZF
 
-if command -v "curl" >/dev/null; then
-  CURL="curl --silent"
-else
-  err "Did not find curl."
-  exit 1
-fi
-export CURL
+  if command -v "curl" >/dev/null; then
+    CURL="curl --silent"
+  else
+    err "Did not find curl."
+    exit 1
+  fi
+  export CURL
 
-if command -v "jq" >/dev/null; then
-  JQ="jq"
-else
-  err "Did not find jq."
-  exit 1
-fi
-export JQ
+  if command -v "jq" >/dev/null; then
+    JQ="jq -r --compact-output"
+  else
+    err "Did not find jq."
+    exit 1
+  fi
+  export JQ
 
-if command -v "mpv" >/dev/null; then
-  MPV="mpv"
-else
-  err "Did not find mpv."
-  exit 1
-fi
-export MPV
+  if command -v "mpv" >/dev/null; then
+    MPV="mpv"
+  else
+    err "Did not find mpv."
+    exit 1
+  fi
+  export MPV
 
-if command -v "socat" >/dev/null; then
-  SOCAT="socat"
-else
-  err "Did not find socat."
-  exit 1
+  if command -v "socat" >/dev/null; then
+    SOCAT="socat"
+  else
+    err "Did not find socat."
+    exit 1
+  fi
+  export SOCAT
+
+  export TOOLS_LOADED=1
 fi
-export SOCAT