I agree with all of that and was thinking that I hadn't mentioned the role of etudes and exercises directed at specific techniques or dexterity, though I guess I had classical music in mind and wasn't thinking about genres or instruments that perhaps favour improvisation over the 'other side' of a highly refined performance of a well-known piece (which still have the performer's own personality in except in a way where the listener likely already 'knows' the piece).

> That's not your average music teacher

Tangentially (or perhaps not as every other topic in 2025 is 'AI'), I was always facinated by the episodes of Star Trek: TNG that showed the holodeck and crew members being able to use that environment to essentially learn skills from the greatest performers (or even a blend) in their area.