Best Rock and Roll concert I ever saw was Chuck and Bo Diddley on the same bill in Wash. D.C. around '72. It was just a runaway freight train from start to finish. If any Chuckophiles haven't seen the documentary and concert film "Hail, Hail Rock and Roll" with Keith Richard and other Rock luminaries I highly recommend it. In the early '80's I was in a blues band and the singer decided he wanted to do "Johnny B. Goode" and I thought no problem but it took me weeks to get those double stops right and I'm not sure I ever did. In addition to his great song writing he was a very original guitarist.