Great art, but yeah the music is damn annoying. On my first playthrough I had no clue about the alternate reality. I also wasn't confronted about my failing at the end. When retrying I collected the seeing eye in the first level, but it then didn't work anymore in the levels after it.
It's also frustrating that you can't dash when holding down jump. You probably have "if(jump) else if(dash)" instead of "if(jump) if (dash)". It would also be nice if I could jump with W or space. It's also possible to kind of get stuck in the wall, jumping at this moment causes the audio to glitch.
The game is an interesting concept, but the game is lacking some serious amount of polish.