Cute game - think it would be better if it were zoomed out then I could route plan and try to go fast, each level feels like an ordeal that you are thankful is over afterwards as its punishing.
The game wanted you to go fast but then in turn demands that you are careful as the notes hit boxes are pretty large and unforgiving.
So I would either reduce the player speed and make it about care or give the player more of a look at the level and allow them to try to go fast. (auto running may fit too)
Would like a variety of music too as music is the key theme here.
Overall it feels fine to play but as a few problems for me.
The art style is charming and I like the hand drawn aesthetic a lot
But for your first jam it's great and hopefully you learned lots (that's what they are all about!)
Well done on completing and submitting 👍