Last week when the tracklist for the Lorde-curated Hunger Games: Mockingjay soundtrack was announced, one song was left off: the mysteriously unlabeled “Track 5.” (Lorde tweeted that it wasn’t meant to be a mystery and that it just hadn’t been finished yet.) In a livestream with her fans today, Ariana Gran...

US singer played piano for Madonna and producer Diplo during recent studio time

"She's having a lot of fun," says the singer's manager

The song was debuted by Skrillex and Diplo's Jack U project this summer in New York

Jack U is the EDM wonder-twins super-team of Diplo and Skrillex. Though they’ve been recording together lately, their music only seems to exist in the form of tracks that Diplo plays during festival DJ sets. One of those tracks is “Take U There,” a collaboration with Kiesza, the singer behind the monster house-pop a...