LilyPond [SEP] license
LilyPond
LilyPond is a computer program and file format for music engraving. One of LilyPond's major goals is to produce scores that are engraved with traditional layout rules, reflecting the era when scores were engraved by hand.
LilyPond is cross-platform, and is available for several common operating systems; released under the terms of the GNU General Public License, LilyPond is free software.
History.
The LilyPond project was started in 1996 by Han-Wen Nienhuys and Jan Nieuwenhuizen, after they decided to abandon work
sound files in MIDI and MP3 formats, and in the notation formats supported by various notation programs, including Finale, Sibelius, NoteWorthy Composer, Encore, and the open source GNU LilyPond. Most scores on CPDL are distributed under an open-source license. As of 1 December 2017, CPDL archives over 27,800 scores by more than 2,900 composers, contributed by over 1,200 editors and contributors. It includes large numbers of scores from the Renaissance and Baroque eras, including nearly complete vocal works by William Byrd and Tomás Luis de Victoria