Producer: Jack Antonoff - Artist: Taylor Swift - Producer: Taylor Swift - Mixer: Serban Ghenea - Assistant Mixer: Bryce Bordone - Recording Engineer: Laura Sisk - Recording Engineer: Jack Antonoff - Asst. Recording Engineer: Megan Searl - Asst. Recording Engineer: Jon Sher - Asst. Recording Engineer: John Rooney - Recording Engineer: Jon Gautier - Mastering Engineer: Randy Merrill - Vocals: Taylor Swift - Drums: Jack Antonoff - Programming: Jack Antonoff - Percussion: Jack Antonoff - Synthesizer: Jack Antonoff - Bass: Jack Antonoff - Acoustic Guitar: Jack Antonoff - Mellotron: Jack Antonoff - Wurlitzer organ: Jack Antonoff - Background Vocalist: Jack Antonoff - Violin: Bobby Hawk - Composer/Author: Taylor Swift