I am able to use various exotic accidentals from SmuFl with my own music functions such as this:
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 #}) Now however I have the need to use quartertone and other accidentals on notes inside chords. How can I add a separate accidentals using SMuFL glyphs to a simple chords like: <fis' cis''>16 I suppose this needs to be done with \tweak but I don't know how to use the music function in that context, or even if that is totally incorrect. Andrew