Producer: Christopher Rowe - Artist: Taylor Swift - Producer: Taylor Swift - Producer: Shellback - Vocal Engineer: Christopher Rowe - Recording Engineer: Mattias Bylund - Editor: Mattias Bylund - Mixer: Serban Ghenea - Engineer: John Hanes - Mastering Engineer: Randy Merrill - Drums: Matt Billingslea - Percussion: Matt Billingslea - Bass: Amos Heller - Synthesizer: Mike Meadows - Synthesizer: Max Bernstein - Synthesizer Programming: Mike Meadows - Synthesizer Programming: Max Bernstein - Synthesizer Programming: Dan Burns - Guitar: Paul Sidoti - Guitar: Max Bernstein - String Arranger: Mattias Bylund - Violin: Mattias Johansson - Cello: David Bukovinszky - Synthesizer: Mattias Bylund - Vocals: Taylor Swift