Thank you so much for trying out and exploring in detail. Great points about nice for sheet music. Given more time, it could actually introduce slowly the note paths, so people could learn to read. You are absolutely right that marking other harmonies "wrong" is not appropriate. As you point out, there are many ways to harmonize. Even the ones I chose were a bit arbitrary. I like the idea of different variations, even allowing the player to designate what they want to play and then that can be used or marking multiple correct. I really appreciate you taking the time and the constructive feedback. Very helpful.