I agree with Zheister. It really lacks a guide or something. I've played Overcooked, so I understood that I had to go a pickup things in the boxes, but then, no idea what to do. I pressed every key on my keyboard and nothing happened. At some point the music stopped.
The 'ryhthm engine' works fine, though! I only think you should use songs that have a stronger, clearer beat to help the player locking in.
The concept might be cool, but it'll need something to raise the stakes, just as Overcooked has timers for orders and rounds.