It's time now to take a step back and seriously look at where Harmonix could go next. People have seen the developments of Guitar Hero and how far that side of the spectrum has come. But, now with Rock Band 2 easily taking its predecessor off the charts in terms of playability and replayability, you begin to wonder what the developers behind the game have in store next. Is it possible to add a new instrument to the mix or would that make things a little too busy on the stage? Whatever comes to us next time, one thing is for sure that sticking with an already winning formula is the best way to go. This is one title Rock Band fans should not pass up.