It's Charli, baby.

Charli XCX, re: "Party 4 U," wrote:This is the oldest song on the album. For myself and A. G., this song has so much life and story—we had played it live in Tokyo and somehow it got out and became this fan favourite. Every time we get together to make an album or a mixtape, it’s always considered, but it had never felt right before now. As small and silly as it sounds, it’s the time to give something back. Lyrically, it also makes some sense now as it’s about throwing a party for someone who doesn’t come—the yearning to see someone but they’re not there. The song has literally grown—we recorded the first part in maybe 2017, there are crowd samples now in the song from the end of my Brixton Academy show in 2019 and now there are recordings of me at home during this period. It’s gone on a journey. It kept on being requested and requested, which made me hesitant to put it out because I like the mythology around certain songs. It’s fun. It gives these songs more life—maybe even more than if I’d actually released them officially. It continues to build this non-existent hype, which is quite funny and also definitely part of my narrative as an artist. I’ve suffered a lot of leaks and hacks, so I like playing with that narrative a little bit.