I'm glad you liked the splash screens! I'm very proud of those. :)
Yeah I wanted it to feel frustrating a bit so that as you got better, it got easier. I played mainly with a gamepad when testing. The 6th level though was so insanely hard that I ended up putting guardrails on the first part so you could learn the controls. I will play those levels a little more with the keyboard, but also when you get the candy it's supposed to throw you off with the perspective change.
I'm really glad you liked the music and the game! :)