Quite fun; however, as pianist I feel the controls weren't very intuitive. Having the buttons closer together may have helped, and I also felt that the low notes should have been on the right instead of the left (again probably because of my piano background.) Besides that, some feedback, such as the note icons changing, would have been nice to tell if I was hitting the notes correctly. Once I got the hang of it though it was quite fun. Very well done! Also amazing start music.