Won't Back Down

"Won't Back Down" is a song by American rapper Eminem featuring singer Pink. It is the fourth track on his seventh studio album Recovery (2010). The track features production from Aftermath Entertainment producer DJ Khalil, who helped write the song along with Eminem, Erik Alcock, and Columbus "Rahki" Smith. Upon the release of Recovery, the song received generally positive reviews from music critics, who praised its aggressive nature and production. "Won't Back Down" charted at numbers 62, 65, 82, and 87 in the United States, Canada, the United Kingdom, and Australia respectively. It was used in the video game Call of Duty: Black Ops and its trailer as well as the trailers for the films Mission: Impossible – Ghost Protocol and Hitman: Agent 47. Eminem performed the song on Saturday Night Live and Late Night with Jimmy Fallon. It was later included on Eminem's second greatest hits album, Curtain Call 2, through Shady Records, Aftermath Entertainment, and Interscope Records. Background and composition "Won't Back Down" was written by Eminem, DJ Khalil, Erik Alcock and Columbus "Rahki" Smith. Along with most of the songs from Recovery, "Won't Back Down" was recorded at 54 Sound and Effigy Studios in Ferndale, Michigan, with recording carried out by Mike Strange. The song is one of the few Eminem songs not in a 4:4 time signature, along with "Untitled" (also from Recovery) and "Underground" (from Relapse). Originally, the song was set to be a solo record, with Eminem singing the chorus himself. Later, Liz Rodriguez, who is also featured on Recoverys "25 to Life" and "Almost Famous", recorded the song's chorus. Eminem however, explained in an interview that after recording his vocals for the song, he decided to include Pink on the song as he "felt like she would really smash this record." Rahki co-produced the song with Khalil.