Charli XCX penned this song with Rivers Cuomo. Asked by The Sun how she met the Weezer vocalist, Charli replied: "He started following me on Twitter, which I thought was cool, and so I hit him up and asked him. I hate working with new people, unless I am a really big fan, but Rivers is the nicest dude ever, so kind and quiet. I just went over to his house and we wrote a song together."
Ariana Grande's collaboration with Zedd, "Break Free" came about after the Russian-German producer overheard Grande performing at a label showcase while he was backstage, and he mentioned to his team that he wanted to work with her.