I played a few times my best performance was: 118 Great, 47 Good and 20 Missed.
I loved playing it, I really like rhythm games, and this one worked really well. He adapted well to the game jam theme, and made an interactive and competent menu with just one button.
The music was cool in the game, and the art has a comfortable style that doesn't interfere with the game's performance.
The game play is functional for the genre, but I must admit that I didn't expect this difficulty, I thought the collision was minor compared to games like Guitar Hero or Taiko no Tatsujin, but it could have just been bad attention on my part. However, once you get used to the game it works very well, and the notes have good spacing, which favors note combos.
Overall it's a great game, if there's interest, it can be easily expanded with new music and levels, that would be great.
Regardless, good luck in your work!