Pop music pioneer Charli XCX has unveiled her new single “1999” feat. Troye Sivan. Charli’s single news follows a defining year for the future pop mastermind after a string of celebrated summer releases, and Sivan, who is fresh off the release of his sophomore album, ´Bloom,´ which was awarded four stars by Rolling Stone and has already racked up more than 700 million cumulative streams.

A bass-laced juggernaut beaming with nostalgia, “1999” binds Charli’s commercial intellect with her innovative instincts, feeling as infectious as it does rebellious. Heralded as one of the most exciting and forward-thinking ambassadors of pop at every turn, Charli penned “1999” with Sivan,  who is also featured on vocals.