Great!
I have never thought such type of game could be so much fun. You have done a great job on the composing part. Very creative and entertaining, nothing much to say.
Everything is pretty balanced and the control system is great. Achievements are nicely picked as well as the inventory for the band guys.
I think that is a great collaborative effort.
However, you SERIOUSLY need to optimize the code and reduce the lag. Since flash is not the most stable (for now) gaming platform it really dos not take system resources to its advantage. It even spikes some times.
p.s. I am running a 2,4gig Prescott CPU, with 1 gig ddr400 ram under pretty light edition of Windows XP.