Very cool game. More of a "concept piece" I would say, but it is a lot of fun playing around with the different parts and being able to exchange them. I also really liked that some parts where kinda "bad"-sounding where you were just like "uuuuhm NO I'll take my previous piece BACK IN THAT PLACE, please" :D
On a technical note I'd be interested: What godot node did you use for the Music? Was that a AudioStreamInteractive in combination with an AudioStreamSynchronized?