This was definitely a unique experience! As a jam game there were of course bugs and annoyances, but they didn't stop me from enjoying and completing the game.
As the most unique element, I want to talk about the visual design a bit. There are of course so many colors being used, but you still managed to make it a coherent theme. The colors definitely conveyed the clownhouse, and the design of the speech bubbles actually reminded me of the Simon Says kids' toy. Given more time to work on this, however, I think you could still effectively convey your theme without hurting the players eyes. In particular, the changing background was a bit much, and I think if the environment's brightness (by which I mean the background and tileset) was turned down a bit it would help the player character and the speech signs stand out.
I like the design of the player's clown. His walk animation is a bit funky, which I assume was partly on purpose, but it still felt a little off. I'm not an animator so I can't really explain why though. Sorry!
To me it looks like the signs use the same asset as the floor. It would be helpful if they were different. Also, I was a bit confused by the last hallway at the end of the game, as there were many signs, but many didn't show me any text?
I appreciate the checkpoint system, and I think they were well-placed throughout!
Just like the visuals, the music matches your theme, but is a little overdone. Also just like the visuals, I think the music can still be effective even when toned down! You mentioned in a comment below that you wanted to practice making music for this game. Most jam games I've played have a basic repeating loops, but I think you did a good job in writing something interesting! It has variety, yet is still unified. The quick runs of notes circling around on each other stood out to me as the most unifying element of the music.
My advice to make it easier to listen to would be to balance all the craziness with some resolution. The music is running at full speed on full blast 200% of the time. Bring in some slower ends to phrases (and for that matter, just give us ends to phrases at all), resolve to some nice stable chords in between the fast runs, vary the texture by playing less notes at one time. Any of these could provide the listener with a bit of respite, and make the clowny-crazy bits more interesting by contrast!