Girl (Pharrell Williams album) song that Williams sings in a falsetto tone. "Come Get It Bae", which features uncredited guest vocals from Miley Cyrus, is a funk song with playful beat. Lyrically, the song is based around sex and the metaphor "You want to ride my motorcycle?" serving as a double entendre for sex. "Happy" was first released on November 21, 2013, the song was originally written for and included on the "Despicable Me 2" soundtrack. The song was reissued on December 16, 2013, as the album's lead single. On November 24, Williams released the first 24-hour music video for "Happy". Guest appearances included
Deadpool 2 (soundtrack) and Reynolds, the latter asked Céline Dion to record the song for the film. The soundtrack also features an original collaboration between Diplo, French Montana, Zhavia Ward and Lil Pump called "Welcome to the Party". As explained by co-writer Reese, the song "We Belong" by Pat Benatar was used in the film to illustrate the theme of family that they were exploring, and was almost used a second time during the X-Force parachuting sequence but was replaced with AC/DC's "Thunderstruck" which was used as a "pump me up" song—because of its "straight" tone and use in "Iron Man 2"—to help