I thought the audio design was really nice and satisfying, and getting the sped up soundtracks gave me a bit of an Overcooked feeling. The chaotic bits at the middle and end of each level were nice, but I think the pacing could be improved. Maybe adding in a high score system, or algorithmically determining a desired "rate" of failures to adapt to the player.
I think the hitboxes are way too small on the first level, especially the top-middle pipe. I essentially lost the first game because I spent 20 seconds walking around trying to figure out what key to hit to fix things. I also noticed some inconsistency, where I could fix something without the UI popping up and prompting me to hit a key.
Overall it was a nice experience.