-LilyPond is the GNU Project music typesetter. This program can print
-beautiful sheet music from a music definition file. It can also play
-mechanical performances to a MIDI file. Features include multiple
-staffs, meters, clefs, keys, lyrics, versatile input language, cadenzas,
-beams, slurs, triplets, named chords, transposing, formatting scores,
-part extraction. It includes a nice font of musical symbols.