So there's this point of reference, an unspoken Chicago thing. John worked for years with Magic Slim. He worked with Muddy Waters, Junior Wells, James Cotton. And they've all influenced me.

There are few figures in blues history as notable as Muddy Waters. Born McKinley Morganfield ... of the southern states to the electrified Chicago sound that served as a bedrock for all later ...

In this tale of sex, violence, race, and rock and roll in 1950s Chicago, "Cadillac Records" follows the exciting but turbulent lives of some of America's musical legends, including Muddy Waters ...