When Mockinjay music curator Lorde originally released the track listing for the movie's soundtrack, the singer-songwriter left a mysterious "Track 5" unnamed, later explaining: "it's just not quite finished." She later tweeted that the now-completed song was "All My Love" by Major Lazer featuring her "sista" Ariana Grande's "angel pipes."
Major Lazer is a side project of Philadelphia producer Diplo (Usher's "Climax," Chris Brown's "Look At Me Now"). Lorde and Diplo have worked together in the past, with the American producer remixing the New Zealander's "Tennis Court."
The song was written by Grande, Lorde and Danish singer-songwriter MØ, who is the featured vocalist on Iggy Azalea's hit tune "Beg for It." The song was produced by Diplo.
"Crank That (Soulja Boy)" was the most successful digital track of 2007 in the US with 2,909,000 downloads. On January 6, 2008 it became the first song ever to sell 3 million digital copies in the States.
Walk The Moon vocalist Nicholas Petricca got the idea for "Shut Up and Dance" when he and his girlfriend were taking forever to get drinks at a Los Angeles club bar. Petricca was getting frustrated, so his girlfriend told him to, "Shut up and dance with me!'"