It's great for this, but by a base $329 model for that, there's no advantage with the Pro for piano. Or buy a refurb 12.9" if you want a bigger screen for the piano
We use it a 1st-gen 12.9" iPad Pro for our piano (and other stuff). If you've got a digital piano you can even plug it in and get MIDI input, which enables some really cool stuff (especially for writing music, I'd expect). It's great, and the 12.9" size is really good for that. I'd expect any newer model to be the same thing, but a little nicer.
