> Utilities converting Gregorio scores to LilyPond code have been > available for years, but it's definitely more convenient to include > gabc scores directly, without invoking an external utility - either > pasting gabc code right in the LilyPond document, or referencing a > gabc file by path. Which is what lilygabc provides: > https://github.com/igneus/lilygabc
Very nice! Note, however, that there are some serious flaws in LilyPond regarding Gregorian notation (especially the non-modern version), and right now there is nobody who works on improving that... Werner