def songs_by_artist(self, artist_name):
predicate = lambda s: s if s.get('artist', None) == artist_name else None
return filter(predicate, mpd_kit.listallinfo())
def songs_by_album(self, album_name):
predicate = lambda s: s if s.get('album', None) == album_name else None
return filter(predicate, mpd_kit.listallinfo())
def songs(self):
songs = set()
for s in mpd_kit.listallinfo():
song = Song(**s)
songs.add(song)
return self._enumerate(songs, 'title')
