Roots, Steven Tyler, Kris Kristofferson also appear at "Imagine" benefit concert in NYC
"I heard one of Muddy Waters' old records when I was a little boy and it scared me to death, because I heard all of those sounds. Wow, what is that all about?"
Simon and Garfunkel's tall one on his childhood, Paul's lyrics and, of course, LSD
Guitar god's 70th birthday shows from London's Royal Albert Hall will appear on upcoming concert film