Multiple accidentals per note?

[infojunkie]

I'm trying to represent the following score in sagittal notation:

The bottom line is straightforward to represent using accidental value other and @smufl attributes corresponding to the various sagittal accidentals in the score.

What about the top line? It uses the so-called Revo notation where simplified sagittal accidentals are mixed with traditional accidentals. SMuFL does not include glyphs for these combinations. There does not seem to be a way to add multiple accidental elements to a note, unless I'm misreading the schema.

Can one "hack" the format today to achieve that?

Otherwise, what would be the simplest modification to MusicXML to accept it? My suggestion: Accept multiple glyphs in @smufl.

[infojunkie]

Another example of multiple accidentals, not in the Sagittal context: w3c/smufl#314 (Ex. 34, 35).

[infojunkie]

As I'm digging deeper into supporting the full set of SMuFL accidentals in Verovio, I am encountering multiple sets of accidentals that are meant to be combined with other accidentals, e.g. the Johnston accidentals (just intonation) (U+E2B0–U+E2BF) where it is explicitly mentioned that

These glyphs are intended for combining with the standard 12-EDO accidentals.

My suggestion to support multiple glyphs in the @smufl attribute. I would love to hear what the community thinks about this suggestion, and what would be a suggested syntax, e.g. smufl="accidentalSharp;accidentalJohnstonEl" - i.e. accidental names separated by non-word chars (regex \W+).

[infojunkie]

Another suggestion would be to modify the note schema to allow for multiple consecutive accidental elements, like dot works today.

This approach would allow finer-grained control on each accidental separately, as well as remaining more closely aligned with MEI which already supports multiple accidentals per note (via the group model.noteModifierLike ).