Hi, thanks so much for the feedback! I'm glad you liked the update :)
I was considering some kind of record button that counted down before starting 'recording' the instrument, but I thought that might break the flow of making the music a bit. It is currently possible to delete the 'recordings', but maybe that's a bit annoying to keep doing at the start. I also just realized, I know what the notes sound like because I've spent so much time with the music, but players might want more time to get used to them. I'll think about that a little more~
And yes saving is also a good idea, I also wanted to try that at some point. It might take a while to figure out a good way of doing it~