Produced by Mark Ronson and featuring Britney Spears, Jason Derulo, Mary J Blige, Jennifer Lopez, Nate Ruess, Imagine Dragons, P!nk, Selena Gomez, Halsey, Adam Lambert, Troye Sivan, RuPaul, The Trans Chorus of Los Angeles and many more.

No bad for something made so quickly.

http://www.youtube.com/watch?v=E3SKR1VMxTM