The drummer ... the hardest worker on the stage
No doubt !!! I'm a guitarist and bassist, and I don't know how Drummers get, and maintain, all that energy all the time without tiring out ... it's amazing what they can do! As a bassist I love playing with a good drummer, keeping the groove and swingin' a bit .. and as a guitarist it's the same, although guitarists can delve off a bit into craziness, it takes a really good drummer to keep it all down to earth.