Producer: Jack Antonoff - Artist: Taylor Swift - Producer: Taylor Swift - Artist: Tensnake - Producer: Sounwave - Producer: Jahaan Sweet - Additional Producer: Braxton Cook - Recording Engineer: Laura Sisk - Recording Engineer: Jack Antonoff - Asst. Recording Engineer: Megan Searl - Asst. Recording Engineer: Jon Sher - Asst. Recording Engineer: John Rooney - Asst. Recording Engineer: Mark Aguilar - Asst. Recording Engineer: Jonathan Garcia - Recording Engineer: Jahaan Sweet - Recording Engineer: Ken Lewis - Mastering Engineer: Randy Merrill - Vocals: Taylor Swift - Programming: Sounwave - Drums: Jack Antonoff - Percussion: Jack Antonoff - Programming: Jack Antonoff - Synthesizer: Jack Antonoff - Mellotron: Jack Antonoff - Wurlitzer organ: Jack Antonoff - Background Vocalist: Jack Antonoff - Background Vocalist: Sam Dew - Background Vocalist: Zoë Kravitz - Bass: Jahaan Sweet - Synth Pads: Jahaan Sweet - Flute: Jahaan Sweet - Synthesizer: Jahaan Sweet - Snare Drum: Dominic Rivinius - Remixer: Tensnake - Composer/Author: Taylor Swift