"Knock You Down" is a song by American singer and songwriter Keri Hilson, recorded for her debut album, In a Perfect World.... The song features guest vocals from Ne-Yo and Kanye West. All three artists co-wrote the song with its producer Nate "Danja" Hills, as well as Kevin Cossom and Marcella Araica. The song was released first released to rhythmic and urban airplay in the United States as the album's fourth single in the US, and it would later serve as the third worldwide single.

"Paranoid" is a song by American rapper Kanye West from his fourth studio album, 808s & Heartbreak (2008). The song features vocals from English musician Mr Hudson and background vocals from fellow American rapper Kid Cudi. West handled the production, with co-production from Jeff Bhasker and Plain Pat. The song was written by the producers alongside Kid Cudi and American rapper Consequence. It was serviced to top 40 radio stations in the United States on March 23, 2009, as the fourth and final single from the album. An upbeat new wave track, the song features electronic drum effects and pop synths. Its lyrical content is centered around West being pushed away by the mistrustful thinking of a woman that he is in love with.