Nice game, but hard as balls. I really enjoy the music and the art, it goes really well together, did a stellar job on that front. In terms of gameplay I'm assuming it's supposed to be as hard as it is giving the tags on the game.
A few minor criticisms I have are how quickly the little guy moves. I'll tap the right key and go a lot farther than I would've liked, it can be pretty hard to control the character at times. Another thing is how the patterns are a little inconsistent as to how complex or simple they are as the level goes on, it feels a bit weird collection a small group of coins in the centre and then collecting more along the borders of the level so quickly.
Last thing I want to mention is how some of the flying blue orbs explode and how some just fly off of the screen. I think it'd be cool if the exploding orbs were a different colour, just to give the game that little extra bit of a learning curve instead of having the players try to act on a whim which can be pretty difficult considering the first critique I gave.
Overall a really nice little game, you guys did the music and graphics justice but I think the gameplay could still be finetuned and go a long way from what it is right now