Interactive Drum Kit almost not bad
I like the idea... but the thing that really bothered me was how you had to use the mouse. I felt it would have been better is it was done with the keyboard. You can only hit one drum at a time, you had to move your mouse to get to another drum and if you missed your timing would be messed up.
If it was on keyboard you could hit every drum on there or at least ten of them. Maybe for originality you should try recording your own drum hits, or get someone with drumset and some drum mikes to record the hits for you. Although free samples are fine I suppose.
It's a good idea but there is plenty of room for improvement.