<P> King is known as the pioneer of rap / blues fusion . He conceived the first sample - based blues concept album in the early 1990s by writing and producing the first all - rap / blues album for RCA Records titled 21st Century Blues...From Da Hood . </P> <P> As an entrepreneur King took control of his master recordings in the early 1990s, forming 21st Century Blues Records . He also established a publishing company, Young Blues Rebel, LLC . 21st Century Records signed the New Orleans Ninth Ward rap / blues duo the 21C - B - Boyz and the London, England - based NuBlues, to 21st Century Blues Records in 2003 . </P> <P> King's acting career includes prominent roles in several films, including two music - related films . In the Oscar - winning film Ray he plays band leader and blues guitar player Lowell Fulson . During production he collaborated with Ray Charles in scoring the film . In O Brother Where Art Thou?, he portrays a skilled blues guitarist who claims he sold his soul to the devil in exchange for his skill on guitar . The character is based on blues musicians Tommy Johnson and Robert Johnson, both of whom have been linked to selling their soul to the devil at a rural Mississippi crossroads . King also accompanies the film's band the Soggy Bottom Boys on guitar; his rendition of "Hard Time Killing Floor Blues" was recorded live during filming and included on the film's Grammy - award - winning soundtrack . </P> <P> King also starred in the Wim Wenders art house film The Soul of a Man, as Blind Willie Johnson and Kill Switch as Detective Storm with Steven Seagal . </P>

Who played the guitar in oh brother where art thou
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