The Marshall Mathers LP 2 (also referred to as the MMLP2) is the eighth studio album by the American rapper Eminem. It was released on November 5, 2013, by Shady Records, Goliath Artists, Aftermath Entertainment, WEB Entertainment, and Interscope Records. Eminem's mentor Dr. Dre serves as an executive producer alongside Rick Rubin. The album is a sequel to Eminem's third album, The Marshall Mathers LP, and follows his usual style by featuring guest singers—in this case Rihanna and Nate Ruess—and by using outside producers: S1, Alex da Kid and Rick Rubin.