I like the concept and the music is very nice! But the game is a little bit hard to look at. All the crystals are super bright, while the character has a totally different colour pallet. There isn't really anything differiantiating all the crystals, which makes it hard to understand where you are supposed to go. It's also even harder because sometimes when you look at the scene from a certain angel, the texture dissapears. Almost like you just sit in the air. 
I guess it could have been intentional, to make the game harder. I would still advice working a bit on the game style though. Still nice game with an interesting concept :D Well done.