Listen to Charli XCX’s new song “Out of My Head,” featuring Tove Lo and Alma

Charli XCX's star-studded mixtape has its first single: "Out of My Head," featuring Tove Lo and Alma. XCX debuted the song on BB1 Radio 1 earlier today; the song is now available on Apple Music.

Pop 2 is the UK pop star's second mixtape, following March's Number 1 Angel. It's out December 15.