Not very original
I've seen many of these drumming simulations. This one has better graphics, of course, but It's aggravating that you have to use the cursor. It eliminates the whole element of the drumset, creating a beat. You should assign each drum to a certain key. Also, you could have thrown in more drum stuff, although that wasn't necessary. Since I play drums myself, I found this relativley interesting. Thats a pretty weird setup, though. Or maybe it's mine...meh