Keith Eric James[1] (born February 4, 1987), formerly of the stage name Marcus Fench, is an American record producer, singer, songwriter and rapper from Chicago, Illinois.

He is a frequent collaborator of fellow Chicago singer Jeremih and has worked with various artists such as 50 Cent,[2] Ne-Yo, Nicki Minaj and Wale.

James began performing with his church choir at the age of nine, singing and playing piano and saxophone.

In 2008, James co-wrote the platinum hit "Birthday Sex"[3] with recording artist and childhood friend Jeremih.

The trio collaborated on the follow-up single "Imma Star", which reached RIAA Certified Gold Status.