"H•A•M" is a song by American rappers Jay-Z and Kanye West. It was released as the first single from their collaborative studio album Watch the Throne on January 11, 2011. It was produced by Lexus "Lex Luger" Lewis and Kanye West. The song has served as the opening track to the duo's Watch the Throne Tour. Various rap artists have remixed it, such as Ace Hood and Busta Rhymes. The song was featured in the 2012 film Project X. It peaked at No. 23 on Billboard Hot 100.

"E.T." is a song by American singer Katy Perry from her third studio album, Teenage Dream (2010). She co-wrote the song with its producers Dr. Luke, Max Martin, and Ammo. "E.T." was serviced to radio stations as the album's fourth single on February 11, 2011. One version of the song features verses from American rapper Kanye West, and that version was included on the reissue of the album, Teenage Dream: The Complete Confection. Musically, it is an electronic and hip hop ballad which draws heavily from dubstep and techno, along with smaller amounts of drum and bass. According to Perry, the song lyrically speaks of "falling in love with a foreigner".