GrandpaDave's SMB Tribute Very catchy beat
I was first kinda startled, when the drums started, but afterwards i think it fits the song. It had much variety, and it didn't sound too synthetic. Although I generally don't like techno, It wasn't too bad :)
Some variety for the percussion wouldn't hurt, and it seemed kinda increative to just fade the drums out. The peak at the end was somehow missing.
Overall it is 4/5. It maybe could be fitting for a mario related action game, or something. If you would make your music less techno-like, I'd like it even more ;)