I like a lot of what's going on here. The aesthetic is all great and it was just my experience with the game so far that makes me give it 3.5 stars. This is certainly partly due to me needing to get better at it. I did find myself doing so each time. Summing up my struggles, I got lost constantly, kept going out of bounds on the same corner (fall->reset->fall, etc), and didn't know if I should be exploring and collecting, or competing for 1st place.
What's a solution to that? One, I get better and learn the map. But I have to want to keep playing too. Two, maybe some direction arrows >>> pointing which way to go to complete the level and move on. Those could be in the environment I imagine. Three, a little map in the corner that shows the roadways within a certain radius that way you could be enticed to go one way and maybe recognize the layout and know where you are.
Only thing I found from my playtime that could be a bug is it was silent for a significant amount of time. Like a song ended and maybe 30 seconds later another one started up.
Right now where it's at, I feel like some people will have a great time, and others will get frustrated with the difficulties and quit playing.