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