The following is a link to a Piano Notes game Nathaniel programmed all by himself! Check it out!
Scratch | Project | Notes
He still has a few bugs to work out (and still needs to edit his instructions for it!) and he is planning on doing several different levels to eventually cover all the bass and treble clef notes. It's been a ton of work and he has learned so much!
Leave a comment and let him know what you think. The game works best if you have a Scratch account but you can still play it if you don't.