Records, and Web Entertainment. It was his first album of original material since Encore (2004), following a four-year hiatus from recording due to his writer's block and an addiction to prescription sleeping medication. Recording sessions for the album took place during 2005 to 2009 at several recording studios, and Dr. Dre, Mark Batson, and Eminem handled production. Conceptually, Relapse concerns the ending of his drug rehabilitation, rapping after a non-fictional relapse, and the return of his Slim Shady alter-ego.

One of the most anticipated album releases of 2009, Relapse debuted at number one on the US Billboard 200 chart, selling 608,000 copies in its first week. It produced three singles that attained chart success and has been certified double platinum by the Recording Industry Association of America. The album received mixed reviews from most music critics, who were divided in their responses towards Eminem's lyrics. It has sold more than three million copies in the United States and more than ten million copies worldwide.