James Keller, better known by many as J∆Y-K (jay k), is an American rapper. As a member of the rap group , 7th Street Slaughta House, he started making music early as a teenager. Jay-k release his first mixtape, The Realness, with the group in 2008. In 2011 he release his solo debut mixtape, Doing me. After gaining exposure off his last mixtape he continues to make Underground - Independent musik.