The first single from Eminem’s sixth studio album Relapse, this song went on to win the Grammy Award for Best Performance by a Duo or Group in 2010.

The song initially gained attention in December 2008, when an unfinished version of the song was initially leaked under the name “Number One” on the mixtape 4th Quarter Pressure Part 2, while a final working version was leaked on January 6, 2009. It features Eminem performing Dre’s verse and an unused Em verse in place of 50 Cent’s.

On February 12, 2009, the song broke the first week digital sales record with 418,000 downloads, topping the previous record held by T.I.’s “Live Your Life”.

This song’s appearance in the Hot 100 marked Eminem’s first appearance on the chart as lead vocalist in two years. His previous entry was “You Don’t Know” which spent six weeks on the Hot 100 in December 2006 and January 2007.

An official music video was released for the track on the 1st of August 2022, 13 years after the song’s release.