Comment by thaumasiotes

> one could make the argument that staff notation is itself a form of text, albeit one with a different notation than a single stream of Unicode symbols

Mostly this is straightforwardly correct. Notes on a staff are a textual representation of music.

There are some features of musical notation that aren't usually part of linguistic writing:

- Musical notation is always done in tabular form - things that happen at the same time are vertically aligned. This is not unknown in writing, though it requires an unusual context.

- Relatedly, sometimes musical notation does the equivalent of modifying the value of a global variable - a new key signature or a dynamic notation ("pianissimo") takes effect everywhere and remains in effect until something else displaces it. In writing, I guess quotation marks have similar behavior.

- Musical notation sometimes relates two things that may be arbitrarily far apart from each other. (Consider a slur.) This is difficult to do in a 1-D stream of symbols.

> although, one can argue that musical notation is not able to adequately preserve some aspects of musical performance

Nothing new there; that's equally true of writing in relation to speech.