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diff --git a/README.md b/README.md
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+# bass
+
+A minimal wrapper around `mpc` and `beets` for the
+[fish](https://fishshell.com/) shell.
+
+[ListenBrainz](https://listenbrainz.org) integration requires
+[listenbrainz-mpd](https://codeberg.org/elomatreb/listenbrainz-mpd).
+
+## Installation
+
+Merge both `functions/` and `completions/` into your `~/.config/fish/` or
+`$XDG_CONFIG_HOME/fish/` directory.
+
+## Usage
+
+- `bass` will accept any command that `mpc` accepts. If no command is given, the playlist is printed.
+- `bass id` prints the MusicBrainz ID of the currently playing track.
+- `bass browse` opens the currently playing track on [MusicBrainz](https://musicbrainz.org/).
+- `bass love` marks the currently playing track as loved on ListenBrainz.
+- `bass hate` marks the currently playing track as hated on ListenBrainz.
diff --git a/completions/bass.fish b/completions/bass.fish
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+set -l commands search find id browse love hate
+
+complete -c bass -f
+complete -c bass -n "not __fish_seen_subcommand_from $commands" -a search -d 'Search with a filter expression'
+complete -c bass -n "not __fish_seen_subcommand_from $commands" -a find -d 'Exact search with a filter expression'
+complete -c bass -n "not __fish_seen_subcommand_from $commands" -a id -d 'Print MusicBrainz ID of the currently playing track'
+complete -c bass -n "__fish_seen_subcommand_from id" -s a -l album -d 'Show ID of the album instead'
+complete -c bass -n "not __fish_seen_subcommand_from $commands" -a browse -d 'Open the currently playing track on MusicBrainz'
+complete -c bass -n "__fish_seen_subcommand_from browse" -s a -l album -d 'Open the album instead'
+complete -c bass -n "__fish_seen_subcommand_from browse" -s o -l open -d 'Open the file in the file manager instead'
+complete -c bass -n "not __fish_seen_subcommand_from $commands" -a love -d 'Mark the currently playing track as loved on ListenBrainz'
+complete -c bass -n "not __fish_seen_subcommand_from $commands" -a hate -d 'Mark the currently playing track as hated on ListenBrainz'
diff --git a/functions/bass.fish b/functions/bass.fish
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+function bass
+	switch "$argv[1]"
+		case search find
+			__bass_print (__bass_mpc $argv)
+		case id
+			__bass_mbid $argv
+		case browse
+			__bass_browse $argv
+		case love
+			mpc sendmessage listenbrainz_feedback love
+		case hate
+			mpc sendmessage listenbrainz_feedback hate
+		case ""
+			__bass_print -p (__bass_mpc playlist)
+		case "*"
+			mpc $argv
+	end
+end
+
+function __bass_print
+	argparse "p/playlist" -- $argv
+	or return 1
+
+	for line in $argv
+		set -l data (string split \t $line)
+		set -l artist (__bass_trim $data[1])
+		set -l album (__bass_trim $data[2])
+		set -l title (__bass_trim $data[3])
+		set -l file $data[4]
+		set -l position $data[5]
+
+		if not isatty stdout
+			echo $file
+		else if set -q _flag_playlist
+			set -l current (mpc -f "%position%" current)
+
+			if test "$position" = "$current"
+				echo -n "▶ "
+			else
+				echo -n "  "
+			end
+
+			__bass_print_track $title $artist $album
+		else
+			__bass_print_track $title $artist $album
+		end
+	end
+end
+
+function __bass_trim
+	set -l length (string length $argv[1])
+	if test $length -gt 39
+		echo (string sub --length 39 $argv[1])…
+	else
+		echo $argv[1]
+	end
+end
+
+function __bass_print_track
+	set_color blue
+	echo -n $argv[1]
+	set_color normal
+	echo " ꞏ $argv[2] ꞏ $argv[3]"
+end
+
+function __bass_mpc
+	set -l format "%artist%\t%album%\t%title%\t%file%\t%position%"
+	mpc -f $format $argv
+end
+
+function __bass_browse
+	argparse "a/album" "o/open" -- $argv
+	or return 1
+
+	set -l id (__bass_mbid $_flag_album)
+	or return 1
+
+	beet browse $_flag_album $_flag_open $id
+end
+
+function __bass_mbid
+	argparse "a/album" -- $argv
+	or return 1
+
+	set -l ids (string split \t (mpc -f "%musicbrainz_trackid%\t%musicbrainz_albumid%" current))
+	if test $status -ne 0
+		return 1
+	end
+
+	if not set -q _flag_album
+		echo "mb_trackid:$ids[1]"
+	else
+		echo "mb_albumid:$ids[2]"
+	end
+end