I didn't know John Mayer was doing a show; I'll have to see if I can get it, he seems cool...listening to Dead covers here compared to concert recordings posted, I have to say I prefer the covers because they're the distilled origins and essence; I love jamming but to make a SONG you need to distill it to the core themes ( sorry, I'm making moonshine right now, so I'm into concentrating)...I saw SLEEP on Saturday night, who were awesome...the most awesome rigs; Al the bass player had THREE SVT STACKS with tho backup heads and a HIWATT half stack...Matt Pike had a Marshall jcm800 stack, a HIWATT stack( in white; never seen one before, looked awesome) and an Orange stack; full stacks too...HUGE is all I can say...hate to be the roadies...Tony