The newest song from The Hunger Games: Mockingjay Part 1 Soundtrack is a dancehall-pop smasher by Major Lazer featuring Ariana Grande. Listen to the official audio stream above, via Grande's YouTube account.
The song starts with a european electronic feel, before the Major Lazer vocal cue, which begins a drum beat that progresses to develop into the chorus when the reggae / salsa feel starts to really come through. This is a fun dance song, and Grande's vocals sound really great. One of the funny things about this is that Ariana Grande is often mistaken for being latina, when she actually comes from Italian roots. Collaborations like this, with the latin musical influence, will probably spread that misconception -- not that it's really a big deal.