Of possible interest: MusicXML to braille music conversion (sent to this mailing list Jan 2020) https://lists.gnu.org/archive/html/lilypond-user/2020-01/msg00418.html
and also: Braille music translation system (BrailleMUSE v5.62pp20210208) from MusicXML to Braille score https://braillemuse.net/BrailleMUSE/en2/Input-e-b2-lyricP.jsp
