Slim Shady lends a chorus to Royce's first single.
Longtime friends Royce Da 5'9" and Eminem are back together again.
The pair released "Writer's Block" on April 8 via the Internet and the cut comes from Royce's upcoming album "Success Is Certain." Produced by Streetrunner, the song sports speedy drums, operatic echoes and biting lyrics from Royce while Eminem handles the chorus.
Royce Da 5'9" is also part of the rap group Slaughterhouse, which counts Joe Budden, Crooked I and Joell Ortiz as members, and the crew is signed to Eminem's Shady Records.