Graphics are pretty solid in this guy! Impressive you put together your own music too. I was confused about the spikes disappearing, but I see now on the game page that they disappear when you jump to the beat. It never hurts to throw in a quick 'how to play' in the game as well so people don't miss out on details like that. I think the background would greatly benefit from having a parallax effect thrown in to give the game some feel of motion. I'm not sure how you programmed the game, but it looked like it might be Pygame. If so, here's a tutorial on how to implement if interested.
Great work! Keep it up!