I'll try to be as constructive as possible when writing this review:
Interesting take on the scaling factor, but little to nothing on "->built <-to scale" (correct me if I'm wrong)
I think it's interesing and creative to go for music that scales as I think fewer people will do this. However the actual gameplay feels boring and repetitive. I think this would be great for a 48 hour game jam, but for 96 hours there should be more than 2 mechanics. The mehcanics you have are simple but polished, but again it becomes repetitive. -but that might also be due to the game not being my type of game
I'm not sure if I'm too harsh or not, this is my first jam and the first game I'm reviewing, wish you all luck =)