That's quite an original piece you've put here...
...But I don't think it worked out very well. Don't get me wrong: The piano used has worked out very well in the end.
I understand you've used a very hard-to-master program, so perhaps it's better to use another program. I personally use FL studio, it's a very professional program; you can make perfect drumloops with that.
Other than all the critique, you also did something right (else you wouldn't have 5/10, right?) You have put up a good rythym and, as I said the piano was used greatly.
Still, good job and keep making music, you'll be better each time you compose! (now to live up to that advice, else it'd be hypocrite :P)