I like this.
Basing it off the drumbeats is a neat change-up to the "Guitar Hero" mold. I like the metal drum concept as well.
However, the buttons to press when playing are really tough to reach and manage in general!
Why not space the keys out a bit? QASD is really awkward. Why not...one of the home rows? JKL; or ASDF, or even a FJKL if you want to space out the cymbals to the left most extreme side....
Anything to avoid such hand cramps up in the corner of the keyboard. Otherwise, I really like this game. Onto level 3.