I really see the potential here! There's a lot of mechanics so I didn't expect all the issues to be ironed out, but the different tools meeting the generation system seemed really neat. I was a little confused here and there, but I like the idea of the journey to mastery in each level being reflected mechanically with the generation stuff on top of just improving, practice-wise.
Good vibes, too; the simple sounds and visuals complement each other. (Might've been another bug but I don't think the music loops.) The victory noise made me laugh.