Hello Jose,
below is something for GNU LilyPond.
Werner
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LilyPond is a music engraving program, devoted to producing the
highest-quality sheet music possible. It brings the aesthetics of
traditionally engraved music to computer printouts. LilyPond is free
software and part of the GNU Project.
Project site: https://lilypond.org/
Adding variants of font glyphs
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* Adding 'on' and 'between' staff-line variants.
* Shorter and narrower variants of some glyphs (for example,
accidentals). Another, more specific example could be an ancient
notation breve notehead coming in two variants, one with a small and
one with a big 'hole' within it.
Difficulty: easy/medium
Size: 175h/350h
Required skills: MetaFont, C++, good eye for details
Contact: 'lilypond-devel@gnu.org' mailing list
(https://lists.gnu.org/mailman/listinfo/lilypond-devel)
Recommended knowledge: basic LilyPond knowledge
More GSoC ideas: https://lilypond.org/google-summer-of-code.html
