The above clip is Muddy Waters circa 1966 performing Got My Mojo Workin'.

According to Wikipedia, McKinley Morganfield (April 4, 1913 – April 30, 1983), better known as Muddy Waters, was an American blues musician and is generally considered "the Father of Chicago blues". He is also the actual father of blues musicians Big Bill Morganfield and Larry 'Muddy Junior' Williams.

Waters was born in Issaquena County, Mississippi in 1913. His grandmother Della Grant raised him after his mother died in 1918. His fondness for playing in mud earned him his nickname at an early age. Waters started out on harmonica but by age seventeen he was playing the guitar at parties and fish fries, emulating two blues artists who were extremely popular in the south, Son House and Robert Johnson. "His thick heavy voice, the dark coloration of his tone and his firm almost solid personality were all clearly derived from House," wrote Peter Guralnick in Feel Like Going Home, "but the embellishments which he added, the imaginative slide technique and more agile rhythms, were closer to Johnson."

In 1940 Waters moved to St. Louis before playing with Silas Green a year later and returning back to Mississippi. In the early part of the decade he ran a juke joint, complete with gambling, moonshine, a jukebox and live music courtesy of Muddy himself. In the Summer of 1941 Alan Lomax came to Stovall, Mississippi, on behalf of the Library of Congress to record various country blues musicians. "He brought his stuff down and recorded me right in my house," Waters recalled in Rolling Stone, "and when he played back the first song I sounded just like anybody's records. Man, you don't know how I felt that Saturday afternoon when I heard that voice and it was my own voice. Later on he sent me two copies of the pressing and a check for twenty bucks, and I carried that record up to the corner and put it on the jukebox. Just played it and played it and said, `I can do it, I can do it.'"
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