Very very nice.
I really liked this song. It's got a nice feel to it; sad, yet almost a little hopeful? I think it could go either way. Yeah, it's a little repetitive, but not really, since you mixed it up a bit throughout. And I seriously plan on using this track for a future Flash animation! Your song inspired an idea!
I only have one concern; there's a small tap sound at the beginning, and it takes away from the intro. If you remove that, then the song would be perfect! :)
This is really a cool song, it makes you think a lot about life, great stuff. Still, i got to say the it can become a little repeative, but thats just the problem when there is now lyrics involved, but it's still one of the best songs i've heard on NewGrounds.
Next step is to record vocals, and possibly a guitar solo!
Please contact me if you would like to use this in a project. We can discuss the details.