Bass, Drums, Guitar – Shellback Engineer [For Mix, Assistant] – Tim RobertsEngineer [For Mix] – John HanesMixed By – Serban GheneaProducer, Synth – Max MartinRecorded By – Lasse Mortén*, Max Martin, Shellback Recorded By [Assistant] – Tommy AnderssonWritten-By – A. Kronlund*, J. Schuster*, L. Roy*, M. Martin*

Bass, Producer – Max MartinDrums – Shellback Guitar – Mats BerntoftMixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenRecorded By – Lasse Mortén*, Max MartinRecorded By [Assistant] – Tommy AnderssonWritten-By – L. Roy*, M. Martin*

Bass, Guitar – Dr. LukeDrums – Dorian CrozierMixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenPercussion, Producer [Pre-Production], Programmed By – Steven "Wolf" Wolf*Producer – Dr. Luke, Max MartinRecorded By – Doug McKeanWritten-By – K. Perry*, L. Roy*, L. Gottwald*, M. Martin*

Bass – Max MartinDrums – Shellback Guitar – Mats Berntoft, Max MartinMixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenProducer – Max Martin, RamiRecorded By – Lasse Mortén*, Max MartinRecorded By [Assistant] – Tommy AnderssonWritten-By – L. Roy*, M. Martin*, R. Yacoub*

Bass, Producer – Max MartinDrums – Shellback Guitar – Max Martin, Shellback Mixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenRecorded By – Doug McKean, Lasse Mortén*, Max MartinRecorded By [Assistant] – Sam Holland, Tommy AnderssonWritten-By – L. Roy*, M. Martin*, S. Kotecha*

Bass, Drums, Guitar – Greg WellsMixed By – Chris Lord-AlgeMixed By [Assistant] – Keith Armstrong, Nik KarpenProducer – Greg WellsRecorded By – Bojan "Genius" Dugic*, Drew PearsonRecorded By [Assistant] – Chris "Big E(Ric)" Soper*Written-By – G. Wells*, K. DioGuardi*, L. Roy*

Bass, Piano – Max MartinDrums – Shellback Guitar – Mats Berntoft, Max MartinMixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenProducer – Max MartinRecorded By – Doug McKean, Lasse Mortén*, Max MartinRecorded By [Assistant] – Sam Holland, Tommy AnderssonWritten-By – L. Roy*, M. Martin*

Arranged By [Strings], Conductor – Henrik Janson And Ulf Janson*Mixed By – Michael IlbertPercussion – Per EklundPiano – Peter LjungProducer – Per AldeheimRecorded By – Tommy AnderssonStrings – Stockholm Session StringsWritten-By – C. Leierth*, L. Roy*, M. Martin*, P. Aldeheim*

Backing Vocals – Keely PresslyBass – Thomas Lindberg*Drums – Thomas Clufetos*Guitar – John 5, Ola GustafssonMixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenProducer – Andreas Carlsson, Desmond Child, Harry SommerdahlProduction Manager – Brian Coleman Programmed By – Harry SommerdahlRecorded By – Harry Sommerdahl, Jules Gondar, Matt Gruber, Steve ChurchyardRecorded By [Assistant] – Jon VellaWritten-By – A. Carlsson*, D. Child*, E. Taubenfield*

Bass – Martin O'BrienDrums, Programmed By – Will HuntGuitar – Phil Xenidis*Mixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenPiano – David HodgesProducer – David Hodges, Mitch AllanRecorded By – Noah PassovoyRecorded By [Assistant] – Ryan KennedyStrings – John Campbell Written-By – D. Hodges*, L. Roy*, M. Allan*

Acoustic Guitar, Bass, Electric Guitar, Keyboards, Percussion, Piano, Programmed By – Emanuel KiriakouArranged By [Strings], Programmed By – Doug PettyDrums – Dorian CrozierEdited By [Digital] – Pat ThrallMixed By – Chris Lord-AlgeMixed By [Assistant] – Keith Armstrong, Nik KarpenProducer – Emanuel KiriakouRecorded By – Emanuel Kiriakou, Matty Green Recorded By [Assistant] – Benjamin Tierney, Mike GurlachWritten-By – E. Kiriakou*, L. Roy*, L. Robbins*

Arranged By [Strings] – Liam BatesBass – Keith Farell*Drums – Carl PapenfusExecutive-Producer – Glenn HerlihyGuitar – Rory O'Connor Keyboards, Programmed By – Mark Murphy Mixed By – Alvin SweeneyProducer – Mark Murphy Recorded By – Kiaran Lynch*, Mark Murphy Written-By – L. Roy*, R. O'Connor*

Bass – Martin O'BrienDrums, Programmed By – Will HuntGuitar – Phil Xenidis*Mixed By – Chris Lord-AlgeMixed By [Assistant] – Nik KarpenPiano – David HodgesProducer – David Hodges, Will HuntRecorded By – Noah PassovoyRecorded By [Assistant] – Ryan KennedyStrings – John Campbell Written-By – D. Hodges*, L. Roy*