I have some suggestions, if I may...

1. Make it loop properly. That's the first rule of a "loop"
2. Make it vary. Instead of 1 round, and loop... make it four rounds, and it changes slightly each one. That way, it won't get on peoples nerves if it were to be in a loading screen or something. That would just be annoying.
3. I agree with the last guy. Piano can never hurt.
4. Check out some of my stuff,
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don't like it..

make it longer.. and make beat for the drum in stead of just let it kick with the piano.. keep it up..