What is Sonata?
Sonata is an elegant GTK+ music client for the Music Player Daemon (MPD). It has been forked from the unmaintained Pygmy project in order to fix bugs, introduce new features, and proceed down a different path.
Features: Expanded and collapsed views; Automatic remote and local album art; Library browsing by folders, or by genre/artist/album; User-configurable columns; Automatic fetching of lyrics; Playlist and stream support; Support for editing song tags; Drag and drop to copy files; Popup notification; Library and playlist searching, filtering; Audioscrobbler (last.fm) 1.2 support; Multiple MPD profiles; Keyboard friendly; Support for multimedia keys; Commandline control; Available in 24 languages;
Last update for the application was in 2009 and current website appears to no longer work.