Drum Programming, Synthesizer – Noel ZancanellaPiano, Synthesizer [Juno], Backing Vocals – Ryan TedderProducer – Noel Zancanella, Ryan Tedder, Taylor SwiftRecorded By – Ryan Tedder, Smith CarlsonRecorded By [Assistant] – Eric Eylands, Matthew TrybaWritten-By – Ryan Tedder, Taylor Swift

Acoustic Guitar, Electric Guitar, Bass, Percussion, Sounds [Stomps] – Shellback Backing Vocals – Taylor SwiftEngineer [Engineered For Mix] – John HanesProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceVoice [Shouts] – Shellback , Taylor SwiftWritten-By – Max Martin, Shellback , Taylor Swift

Backing Vocals – Taylor SwiftGuitar [Additional] – Shellback Guitar [Funkalicious] – Niklas LjungfeltProducer, Keyboards – Max MartinProducer, Keyboards, Programmed By – Ali Payami, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Ali Payami, Max Martin, Shellback , Taylor Swift

Acoustic Guitar, Electric Guitar, Bass, Keyboards, Drums, Backing Vocals – Jack AntonoffProducer [Vocals] – Max MartinRecorded By – Laura Sisk, Sam HollandRecorded By [Assistant] – Brendan Morawski, Cory BiceWritten-By, Producer – Jack Antonoff, Taylor Swift

Backing Vocals – Taylor SwiftDrums, Bass, Percussion – Mattman & RobinGuitar – Mattman & Robin, Shellback Producer, Programmed By, Keyboards – Mattman & Robin, Max Martin, Shellback Recorded By – Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Taylor Swift

Acoustic Guitar, Bass, Drums, Percussion – Shellback Producer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceSaxophone – Jonas ThanderTrombone – Magnus WiklundTrumpet – Jonas LindeborgWritten-By, Backing Vocals, Handclaps, Voice [Shouts] – Max Martin, Shellback , Taylor Swift

Acoustic Guitar, Electric Guitar, Bass, Drums, Backing Vocals – Jack AntonoffProducer [Additional], Keyboards – Greg KurstinProducer [Vocals] – Max MartinProducer, Written-By – Jack Antonoff, Taylor SwiftRecorded By – Jack Antonoff, Sam HollandRecorded By [Assistant] – Cory Bice

Acoustic Guitar, Bass, Percussion, Sounds [Knees, Stomps, Noise] – Shellback Backing Vocals – Shellback , Taylor SwiftEngineer [ProTools] – Peter Carlsson Piano – Max MartinProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Shellback , Taylor Swift

Acoustic Guitar, Electric Guitar, Percussion – Shellback Backing Vocals, Sounds [Heartbeat] – Taylor SwiftEngineer [ProTools] – Peter Carlsson Piano – Max MartinProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceRecorded By [Strings], Edited By [Strings], Arranged By [Strings] – Mattias BylundWritten-By – Max Martin, Shellback , Taylor Swift

Backing Vocals – Taylor SwiftGuitar, Bass, Drums – Shellback Producer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Shellback , Taylor Swift

Backing Vocals, Written-By, Acoustic Guitar – Taylor SwiftCoordinator [Production Coordination] – Jason Campbell Producer – Nathan Chapman, Taylor SwiftRecorded By, Electric Guitar, Bass, Keyboards, Drums – Nathan Chapman

Acoustic Guitar, Electric Guitar, Piano, Backing Vocals – Ryan TedderBass – Noel ZancanellaDrum Programming, Synthesizer [Additional], Programmed By – Noel Zancanella, Ryan TedderProducer – Noel Zancanella, Ryan Tedder, Taylor SwiftRecorded By – Ryan Tedder, Smith CarlsonRecorded By [Assistant] – Eric Eylands, Matthew TrybaWritten-By – Ryan Tedder, Taylor Swift

Recorded By, Vibraphone, Drums, Mbira, Percussion, Programmed By, Keyboards, Backing Vocals – Imogen HeapVocals – Taylor SwiftWritten-By, Producer – Imogen Heap, Taylor Swift

Drum Programming, Synthesizer – Noel ZancanellaEngineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaPiano, Synthesizer [Juno], Backing Vocals – Ryan TedderProducer – Noel Zancanella, Ryan Tedder, Taylor SwiftRecorded By – Ryan Tedder, Smith CarlsonRecorded By [Assistant] – Eric Eylands, Matthew TrybaWritten-By – Ryan Tedder, Taylor Swift

Acoustic Guitar, Electric Guitar, Bass, Percussion, Sounds [Stomps] – Shellback Backing Vocals – Taylor SwiftEngineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceVoice [Shouts] – Shellback , Taylor SwiftWritten-By – Max Martin, Shellback , Taylor Swift

Backing Vocals – Taylor SwiftEngineer [Engineered For Mix] – John HanesGuitar [Additional] – Shellback Guitar [Funkalicious] – Niklas LjungfeltMastered By – Tom CoyneMixed By – Serban GheneaProducer, Keyboards – Ali Payami, Max Martin, Shellback Programmed By – Ali Payami, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Ali Payami, Max Martin, Shellback , Taylor Swift

Acoustic Guitar, Electric Guitar, Bass, Keyboards, Drums, Backing Vocals – Jack AntonoffEngineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaProducer [Vocals] – Max MartinRecorded By – Laura Sisk, Sam HollandRecorded By [Assistant] – Brendan Morawski, Cory BiceWritten-By, Producer – Jack Antonoff, Taylor Swift

Backing Vocals – Taylor SwiftDrums, Bass, Percussion – Mattman & RobinEngineer [Engineered For Mix] – John HanesGuitar – Mattman & Robin, Shellback Mastered By – Tom CoyneMixed By – Serban GheneaProducer, Programmed By, Keyboards – Mattman & Robin, Max Martin, Shellback Recorded By – Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Taylor Swift

Acoustic Guitar, Bass, Drums, Percussion – Shellback Engineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceSaxophone – Jonas ThanderTrombone – Magnus WiklundTrumpet – Jonas LindeborgWritten-By, Backing Vocals, Handclaps, Voice [Shouts] – Max Martin, Shellback , Taylor Swift

Acoustic Guitar, Electric Guitar, Bass, Drums, Backing Vocals – Jack AntonoffEngineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaProducer – Jack Antonoff, Taylor SwiftProducer [Additional], Keyboards – Greg KurstinProducer [Vocals] – Max MartinRecorded By – Jack Antonoff, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Jack Antonoff, Taylor Swift

Acoustic Guitar, Bass, Percussion, Sounds [Knees, Stomps, Noise] – Shellback Backing Vocals – Shellback , Taylor SwiftEngineer [Engineered For Mix] – John HanesEngineer [ProTools] – Peter Carlsson Mastered By – Tom CoyneMixed By – Serban GheneaPiano – Max MartinProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Shellback , Taylor Swift

Acoustic Guitar, Electric Guitar, Percussion – Shellback Backing Vocals – Taylor SwiftEngineer [Engineered For Mix] – John HanesEngineer [ProTools] – Peter Carlsson Mastered By – Tom CoyneMixed By – Serban GheneaPiano – Max MartinProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceRecorded By [Strings], Edited By [Strings], Arranged By [Strings] – Mattias BylundSounds [Heartbeat] – Taylor SwiftWritten-By – Max Martin, Shellback , Taylor Swift

Backing Vocals – Taylor SwiftEngineer [Engineered For Mix] – John HanesGuitar, Bass, Drums – Shellback Mastered By – Tom CoyneMixed By – Serban GheneaProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Shellback , Taylor Swift

Coordinator [Production Coordination] – Jason Campbell Engineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaProducer – Nathan Chapman, Taylor SwiftRecorded By, Electric Guitar, Bass, Keyboards, Drums – Nathan ChapmanWritten-By, Acoustic Guitar, Backing Vocals – Taylor Swift

Acoustic Guitar, Electric Guitar, Piano, Backing Vocals – Ryan TedderBass – Noel ZancanellaDrum Programming, Synthesizer [Additional], Programmed By – Noel Zancanella, Ryan TedderEngineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaProducer – Noel Zancanella, Ryan Tedder, Taylor SwiftRecorded By – Ryan Tedder, Smith CarlsonRecorded By [Assistant] – Eric Eylands, Matthew TrybaWritten-By – Ryan Tedder, Taylor Swift

Engineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaRecorded By, Vibraphone, Drums, Mbira, Percussion, Programmed By, Keyboards, Backing Vocals – Imogen HeapVocals – Taylor SwiftWritten-By, Producer – Imogen Heap, Taylor Swift

Backing Vocals – Taylor SwiftEngineer [Engineered For Mix] – John HanesGuitar, Bass – Shellback Mastered By – Tom CoyneMixed By – Serban GheneaProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Shellback , Taylor Swift

Acoustic Guitar, Electric Guitar, Bass, Keyboards, Drums, Backing Vocals – Jack AntonoffEngineer [Engineered For Mix] – John HanesMastered By – Tom CoyneMixed By – Serban GheneaProducer [Vocals] – Max MartinRecorded By – Brendan Morawski, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By, Producer – Jack Antonoff, Taylor Swift

Backing Vocals – Shellback , Taylor SwiftEngineer [Engineered For Mix] – John HanesGuitar, Bass, Drums – Shellback Mastered By – Tom CoyneMixed By – Serban GheneaProducer, Keyboards, Programmed By – Max Martin, Shellback Recorded By – Michael Ilbert, Sam HollandRecorded By [Assistant] – Cory BiceWritten-By – Max Martin, Shellback , Taylor Swift

Written-By – Ryan Tedder, Taylor Swift

Written-By – Jack Antonoff, Taylor Swift

Written-By – Max Martin, Shellback , Taylor Swift