Songfacts®:

• This song is the third track from American rapper Lil Wayne's seventh studio album, Rebirth, to make the Hot 100.
• The track features Eminem. Lil Wayne and Slim Shady previously appeared together along with Kanye West and Drake on the track "Forever." When this debuted at #18 on the Hot 100, "Forever" was one place below at #19.
• Lyrically, the song finds the two rappers expressing how they find inner strength in troubled times.
• Both Eminem and Lil Wayne star in the song's music video, which was directed by Chris Robinson. The director told MTV News that the clip matches the song's intensity: "You got two guys who are basically huge supernovas coming together, and the way that the song is constructed is great," he said. "Because unless you see it coming, you don't know Eminem is on the track. The first two hooks and the first two verses are all Wayne, and it's kind of a surprise when Eminem comes through, and we matched it visually how Eminem enters the piece. From the concept and to just hearing the lyrics, with both of these amazing lyricists killing it, the whole video is just energy."
• The video ends with the entire world on fire. Other post-apocalyptic promos with a similar theme include the Black Eyed Peas' "Imma Be,"Jay-Z's "Run This Town" and Adam Lambert's "Time For Miracles."