James Dewitt Yancey, better known by the stage names J Dilla and Jay Dee, was an American record producer, composer and rapper. He emerged from the mid-1990s underground hip hop scene in Detroit, Michigan, as a member of the group Slum Village. He was also a member of the Soulquarians, a musical collective active during the late 1990s and early 2000s. He additionally collaborated with Madlib as Jaylib, releasing the album Champion Sound. Yancey's final album was Donuts, which was released three days before his death.
Yancey died at the age of 32 from a combination of TTP and lupus. Although his life was short, he is considered to be one of the most influential producers in hip hop and popular music. J Dilla's music raised the artistic level of hip-hop production in Detroit.