Hi Freeman, Be assured that this can be done. I use the following technique all the time.
First you need to be familiar with openlilylib and install it. See archives for instructions. [I cant assume you know how to use it.] Then there is a snippet for custom-music-fonts/smufl. Here's some functions I have, as an example. Andrew %===== \version "2.21.0" \include "custom-music-fonts/smufl/definitions.ily" accidentalHalfSharpArrowUp = #(define-music-function (note) (ly:music?) #{ \once \override Voice.Accidental.stencil = #ly:text-interface::print \once \override Voice.Accidental.text = \markup { \smuflglyph "accidentalHalfSharpArrowUp" } $note #}) accidentalNaturalRaise = #(define-music-function (note) (ly:music?) #{ \once \override Voice.Accidental.stencil = #ly:text-interface::print \once \override Voice.Accidental.text = \markup { \smuflglyph "accidentalQuarterToneSharpNaturalArrowUp" } $note #}) %{ treble = { d'4 \accidentalHalfSharpArrowUp des'4 \accidentalNaturalRaise d' } \score { \new Staff { \treble } \layout { \context { \Score \accidentalStyle dodecaphonic } } } %} ~ %=====