Dylan O'Brien plays drums on the song. The Maze Runner
actor became close friends with Swift and Antonoff after the pop star cast him alongside Sadie Sink in her All Too Well
short film in 2021.
One day, O'Brien was drinking wine and listening to music with Swift and Antonoff at Antonoff's home studio. "He was just trying out the drum kit there," Swift recalled on The Tonight Show Starring Jimmy Fallon
. "He wasn't serious, but as I said, we were drinking wine and so, we were just sort of like, 'Oh, we haven't recorded the drums for this one yet, see if you wanna.' And he just played the drums on the song. Sometimes it just happens like that."