Producer: Jack Antonoff - Artist: Taylor Swift - Featuring: Shawn Mendes - Producer: Taylor Swift - Vocal Producer: Zubin Thakkar - Recording Engineer: Zubin Thakkar - Recording Engineer: Laura Sisk - Recording Engineer: Jack Antonoff - Asst. Recording Engineer: John Rooney - Mixer: Serban Ghenea - Mix Engineer: John Hanes - Vocals: Taylor Swift - Programmer: Jack Antonoff - Drums: Jack Antonoff - Percussion: Jack Antonoff - Bass Guitar: Jack Antonoff - Acoustic Guitar: Jack Antonoff - Keyboards: Jack Antonoff - Piano: Jack Antonoff - Vocals: Shawn Mendes - Vocal Engineer: George Seara - Vocal Engineer: Mike Gnocato