This is... Something. It's incredibly long, with no check points, and every time you die, you restart from the beginning. The entire game, played flawlessly, will take about seven minutes though. So, no mistakes. The actual mechanics worked pretty well. Given different music and more levels I can see this being, okay, but this. It's tiresome. You picked good music, but without a mute or any other songs, it gets really really annoying.
I also noticed that there are points where it is literally impossible to not hit the incorrect blocks. And some portions make me think the original prototype had more freedom of movement until you decided to fix the horizontal speed. Which REALLY, was a good Idea. It gave the game a nice sense of movement. Also, THANK YOU for having the colors synched with the keyboard. It would not have been possible to keep switching otherwise.
Truly, this was a simple game, that had some pretty good concepts, that really could have gotten better with a few more tests and fine tuning. And seriously, a MUCH shorter length.