Katy Perry ‎– One Of The Boys

Backing Vocals – Cathy DennisCoordinator [Production Coordinated By] – Gary "G" Silver*Drums [Live] – Steven WolfDrums, Programmed By – Benny Blanco (3), Dr. LukeEngineer – Aniela Gottwald*, Emily Wright, Mike Caffrey, Nick Banns, Sam Holland, Tina KennedyEngineer [Assisted By] – Kitty Purry*Engineer [Mix, Assisted By] – Tim RobertsEngineer [Mix] – John HanesGuitar, Bass – Dr. LukeMixed By – Serban GheneaProducer – Dr. LukeProducer [Additional Production] – Benny Blanco (3)Recorded By [Drum Recording], Producer [Additional Drum Production] – Mike CaffreyWritten-By – Cathy Dennis, Katy Perry, Lukasz Gottwald, Max Martin

Instruments [All] – Greg WellsMixed By – Joe ZookProducer – Greg Wells, Katy PerryRecorded By – Greg WellsWritten-By – Andreas Carlsson, Desmond Child, Katy Perry

Drums – Darren DoddInstruments [All Other Instruments] – Butch WalkerKeyboards, Programmed By – Dan ChaseMixed By – Joe ZookProducer – Butch WalkerRecorded By – Paul Hager*Written-By – Katy Perry

Instruments [All] – Greg WellsMixed By – Greg WellsProducer – Greg WellsRecorded By – Luke TozourWritten-By – Katy Perry

Arranged By [Horn Arrangement] – Jerry HeyHorns [Horn Section] – Bill Reichenbach (2), Dan Higgins, Gary Grant, Jerry HeyMixed By – Joe ZookPiano, Guitar, Bass, Beats – Greg WellsProducer – Greg WellsRecorded By – Drew PearsonVocals, Whistling – Katy PerryWritten-By – Greg Wells, Katy Perry

Bass – Dr. LukeCoordinator [Production Coordinated By] – Gary "G" Silver*Drums, Programmed By – Benny Blanco (3), Dr. LukeEngineer – Emily Wright, Nick Banns, Sam Holland, Tatiana Gottwald, Tina KennedyEngineer [Mix, Assisted By] – Tim RobertsEngineer [Mix] – John HanesGuitar – Dr. Luke, Max MartinMixed By – Serban GheneaProducer – Dr. LukeProducer [Additional Production] – Benny Blanco (3)Written-By – Katy Perry, Lukasz Gottwald, Max Martin

Guitar – Dave Katz, Sean GouldMixed By – Joe ZookProducer – S*A*M, SluggoProgrammed By – Dave Katz, Sam HollanderRecorded By – Sean GouldWritten-By – Dave Katz, Katy Perry, Sam Hollander

Drums – Josh FreeseEngineer [Drums Engineered By] – Mike FennelInstruments [All Other Instruments] – Ted BrunerMixed By – Joe ZookProducer – Ted BrunerRecorded By – Ted BrunerWritten-By – Katy Perry, Ted Bruner

Bass – Paul BushnellDrums – Josh FreeseGuitar – Dave Levita*, Scott CutlerMixed By – Joe ZookProducer – Anne Preven, Scott CutlerRecorded By – Doug BoehmWritten-By – Anne Preven, Katy Perry, Scott Cutler

Coordinator [Aerowave Coordinator] – Stephanie KubiakGuitar, Instruments [All Other Instruments] – Dave Stewart*Mixed By – Joe ZookPiano – Katy PerryProducer – Dave Stewart*Programmed By – Ned DouglasProgrammed By [Additional] – Jeff BovaRecorded By – Bill Malina, Ned DouglasWritten-By – Dave Stewart*, Katy Perry

Instruments [All] – Greg WellsMixed By – Joe ZookProducer – Greg WellsRecorded By – Greg WellsWritten-By – Greg Wells, Katy Perry