Such a creative concept! I was thinking of something about a movement rhythm game upon hearing the beats, and I certainly did not expect such an interesting twist!
One part I really loved was the fast-paced level switch. Along with the beat, it really added a speed factor to the game. In addition, the speed of scene changes made a mistake not so punishing since I can just return to the same loop 15 seconds later.
One small suggestion is to do an overlay of the next scene translucently in a way so that the player can avoid getting stuck often. I got stuck a lot of times and had to restart lol. This is purely personal preference.
Great job!