IMSLP/Petrucci Music Library: Free Public Domain Sheet Music [http://imslp.org/wiki/Main_Page] - 2011-12-18 17:20:49 - public:time music, sheetmusic, wiki - 3 | id:2470 -
LilyPond - About - Essay [http://lilypond.org/web/about/automated-engraving/index] - 2008-12-16 19:17:23 - public:time editor, essay, music, notation, paper, sheetmusic, software, theory, typography - 9 | id:3928 -
