You say this is a pacifist game, but I feel in danger, with how much time I could spend on this! :) Seriously, though, this is a really lovely concept, and I’m really enjoying playing around with it.
I'm glad you liked it! This was really fun to make and researching it was fun too. Was watching music theory videos at midnight trying to figure out why no matter what I did it sounded like X, or what the key aspects were of songs that sounded like Y.