[moehm]

I still don't see the point. If you practice a piece, you have to practice how to put which finger where, on a piano or a guitar. It's part of practicing to figure this out.

> Of course, on top of that, you also have a wide range of ways to modify how you play on a guitar.

Yeah, same with the piano. And I think, with most of all instruments.

[nautilius]

You can easily build a robot that you feed sheet music, and that robot will then be able to press the right buttons on a piano keyboard.

This is not possible for a guitar (and others) because there is no unique mapping between the note on the sheet and the position on the instrument.