Coordinator [Production Coordination] – Andrew "McMuffin" Luftman*, Scott "Yarmov" Yarmovsky*Engineer – Chris "Anger Management" Sclafani*, Noah "Mailbox" Passovoy*Engineer [Assistant Engineered For Mix] – Tim RobertsEngineer [Engineered For Mix] – John HanesMixed By – Serban GheneaProducer, Instrumentation By, Programmed By – Benny Blanco , Shellback Trombone – Gabrial McNairTrumpet – Stephen BradleyVocals [Additional] – Shellback Written-By – Benjamin Levin, Mike Posner , Shellback

Arranged By [Vocal Arrangement] – Carl Falk , RamiBacking Vocals – Nikki FloresBass – RamiEdited By [Vocal Editing] – Albin Nedler, Carl Falk , Kristoffer Fogelmark, RamiEngineer [Engineered For Mix] – John HanesGuitar – Carl Falk Mixed By – Serban GheneaProducer, Recorded By, Engineer, Instruments [All Instruments Played And Programmed By] – Carl Falk , Rami, Shellback Written-By – Carl Falk , Ina Wroldsen, Rami, Shellback

Backing Vocals – ILYA*, Shellback Bass – Shellback Engineer – Michael IlbertEngineer [Assistant Engineered For Mix] – Tim RobertsEngineer [Engineered For Mix] – John HanesFeaturing – T.I.Guitar – OzGo*, Shellback Mixed By – Serban GheneaProducer, Programmed By, Keyboards [Keys] – ILYA*, OzGo*, Shellback Written-By – ILYA*, Oscar Görres, Savan Kotecha, Shellback , T.I.

Backing Vocals – Marlene StrandBass – RamiEdited By [Vocal Editing] – Albin Nedler, Carl Falk , Kristoffer Fogelmark, RamiEngineer [Engineered For Mix] – John HanesGuitar – Carl Falk , Kristoffer FogelmarkMixed By – Serban GheneaProducer, Arranged By [Vocal Arrangement], Instruments [All Instruments Played And Programmed By] – Carl Falk , RamiRecorded By, Engineer – Albin Nedler, Carl Falk , RamiWritten-By – Carl Falk , Ina Wroldsen, Rami

Backing Vocals – Max Martin, Shellback , The Struts Engineer – Noah "Mailbox" Passovoy*Engineer [Assistant Engineered For Mix] – Tim RobertsEngineer [Assisted By] – Eric Eylands, Spyke LeeEngineer [Engineered For Mix] – John HanesGuitar, Bass – Shellback Mixed By – Serban GheneaProducer, Programmed By, Keyboards [Keys] – Shellback , The Struts Written-By – Cher Lloyd, Jakob Jerlström, Ludvig Söderberg, Max Martin, Savan Kotecha, Shellback

Acoustic Guitar – Paul ShearerElectric Guitar – Tofer BrownEngineer [Engineered For Mix] – John HanesMixed By – Serban GheneaProducer [Additional Vocal Production] – Catt GravittProducer, Instruments [All Other] – Robert MarvinProgrammed By [Additional Programming] – Kyle ShearerRecorded By – Robert Marvin, Rouble KapoorUkulele – LP*Written-By – Catt Gravitt, LP*, Robert Marvin

Backing Vocals – Dan Book, Jason Evigan, Livvi FrancGuitar – Corky JamesMixed By – Serban GheneaProducer, Recorded By – Jason EviganProgrammed By [Additional Programming] – Isaiah TejadaWritten-By – Beth Ditto, Cher Lloyd, Jason Evigan

Engineer – Michael IlbertEngineer [Assistant Engineered For Mix] – Tim RobertsEngineer [Engineered For Mix] – John HanesGuitar – Shellback Mixed By – Serban GheneaProducer, Programmed By, Keyboards [Keys] – Shellback , The Struts Written-By – Cher Lloyd, Jakob Jerlström, Ludvig Söderberg, Savan Kotecha, Shellback , Tove Lo

Acoustic Guitar [Additional] – Larry GoetzEngineer [Engineered For Mix] – John HanesMixed By – Serban GheneaProducer [Vocal Production] – Emily WrightProducer, Instruments [All] – Johan Carlsson , Matt SquireRecorded By – Emily Wright, Johan Carlsson , Matt SquireRecorded By [Assisted By] – Cory BiceWritten-By – Cher Lloyd, Emily Wright, Johan Carlsson , Matt Squire

Engineer – Johan Carlsson , Mag*, Peter Carlsson Engineer [Vocals Engineered By] – Johan Carlsson Guitar – Johan*Producer – Johan Carlsson , Mag*Producer [Vocal Produced By] – Johan*, Mag*, Peter*, Savan KotechaProgrammed By, Synth – Mag*Written-By – Cher Lloyd, Johan Carlsson , Marco Borrero, Savan Kotecha

Engineer – Michael IlbertEngineer [Assistant Engineered For Mix] – Tim RobertsEngineer [Engineered For Mix] – John HanesGuitar – Shellback Mixed By – Serban GheneaProducer, Programmed By, Keyboards [Keys] – Oscar Holter, Shellback Written-By – Oscar Holter, Savan Kotecha, Shellback

Acoustic Guitar – Jon KetchumKeyboards – Bryan LemusMixed By – Al Clay*Percussion – Rob KetchumProducer – Cher Lloyd, Jon KetchumRecorded By – Ari JudahRecorded By [Assisted By] – Will Valentine

Remix, Producer [Remix] – Jenaux