Yep but along the lines of Highlighter 👉 and note can be a single sample / note (musical) or bar or line of lyrics.
Discussion
Maybe a different kind and you can write musical notation (that any sampler can turn into sounds).
As for everything, most of it already exists and as #nostrasia presentation instructed: look for ISO standards.
Just quick googling:
https://en.wikipedia.org/wiki/MusicXML
We have enough musicians here already
note16zefud7gvz8pf2dekd0ca0td9d0tqc332hay56ddl08jpg02qwssdzj68w
That would be interesting. Could work for notes / lyrics when highlighted versions can have variants from other people. Not sure about audio part 🤔
Gotta nice ring to it 😂😏