First of all: Yo, bro, that bass xD
Secondly: cool concept, nice made and for what it is really polished, I'd just recommend you to do a tiny little fade in/fade out on the tracks, they seem like they run into each other with the force of 3 horses.
Great made - even the highscores are encrypted! I wouldn't have thought of that xD Also for copyright reasons, I'd suggest you to take another music, but man, the music in there now just blasts through :)
You should drag your audio into audacity and find a good place for the song to loop, maybe stick something in the front, maybe make it longer, so that it isn't noticed that much, or even try making your own music! I've also tried it and I love it! For example, there is boscaCeoil if you want to make a chiptune sound, it is really easy! Or if you want to get more serious, just try FL Studio or Ableton life, (I'd recommend FL Studio, it is far more user friendly!)
You could also search for great music on the fantastic site opengameart.org - I use it all the time and there is such a great community!
And maybe, just maybe scale it up a little, it is really tiny, but there should be at least an option for that, but the concept and all is great! I'd just open the game for the blast of music at the start xD
I'm on the AlmithyZenTaco Discord, same username, I'm always here for collegues!
And: make sure, that the store window isn't open at the same time as the game.