Players like Anastasio and Steve Vai are on a whole different level when it comes to skill. Problem for me with either of those dudes is that unless they dumb it down, it can be like trigonometry put to music. I don't want to have to be a math whiz to enjoy music, I just want it to have a soul.
Well, I'm not sure how money for flood relief was generated by doing a free show, but imagine how much it would have generated if they had just charged for admission & sold out like they apparently do everywhere else. A charitable notion in spirit, but my guess is it could have easily been tenfold.