James Dewitt Yancey (February 7, 1974 – February 10, 2006), better known by the stage names J Dilla and Jay Dee, was an American record producer and rapper who emerged in the mid-1990s underground hip hop scene in Detroit, Michigan, as one third of the acclaimed music group Slum Village. His obituary at NPR stated that he "was one of the music industry's most influential hip-hop artists," working with notable acts including A Tribe Called Quest, De La Soul, Busta Rhymes, Erykah Badu, The Roots, The Pharcyde, Madlib and Common. - Source: Wikipedia