Yeah, I definitely should've provided the player some more positive/negative feedback. Also, maybe I could've gotten away with a system of dividing play sessions into sets comprising several rounds, each ending with a scorecard, but I worry that would prevent the player from hearing the entirety of each song unless I made each set very long, and since I had only a few unique minigames, I worried it would get monotonous. I did, however, make sure to allow the player to return to the menu at will by pressing M, which I documented in the 'how to play' screen.
Thanks for playing!