I will be commenting on the fixed build, but rating on the broken one since the fixed one wasn't submitted on time.
Great little game! First rhythm game I see here! Those reverse arrows are not messing around!
Though, there is one game breaking bug: you can just hold the arrow key down. Once the arrow touches the pink bar, it gets destroyed. Even more broken: Hold all arrow keys down at the same time. Congrats, you won the entire game by doing absolutely nothing.
I already know that the game uses Input.GetKey("whatever") to detect the arrow keys. You should have used Input.GetKeyDown("whatever") to only get the press and not the hold. Unless this was intended (which doesn't feel like it.)
I know I said rhythm game, but the actual notes were not all on beat with the music, which makes the fun of playing music less apparent. Also, music is good, but some can get a bit annoying to the ear (especially that square wave at the second half of the final level, which I immediately recognized the original song ;) )
Apart from that, I liked it! Good job! Too bad the fix came in too late to submit for the jam.
If you've got some spare time, come try and rate mine! It has 7 endings, a hilarious narrator, worth checking out!