Forty years ago, a group of Chicago-based blues artists gathered with some of their younger blues brethren from all over the country to pay tribute to the man most responsible for bringing blues from the Mississippi Delta upriver to Chicago: Muddy Waters. Appearing with Muddy that night were Willie Dixon, Koko Taylor, Junior Wells and Pinetop Perkins, and, from the next generation, Mike Bloomfield, Buddy Miles, Johnny Winter and Dr. John and Nick Gravenites – all artists who have now become legends themselves.