A program for printing sheet music 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.