Engineer [Additional Engineering] – Rory Baker, Simon GogerlyEngineer [Assistant] – Anthony Kilhoffer, Ian RossiterProducer – Nellee Hooper, No DoubtProducer [Additional Production] – Mark "Spike" Stent*Programmed By – Fabien WaltmannRecorded By – Greg CollinsWritten-By – C. Hugo*, G. Stefani*, P. Williams*, T. Kanal*

Engineer [Additional Engineering] – Count, Rory Baker, Tkae MendezEngineer [Additional] – Rory BakerEngineer [Assistant] – Toby WhalenExecutive-Producer – Brian Jobson, Wayne JobsonFeaturing – Bounty KillerProducer – No Doubt, Sly & RobbieProducer [Additional Production] – Mark "Spike" Stent*Producer [Additional Production], Programmed By [Additional Programming] – Philip SteirProgrammed By – Sly Dunbar, Tom Dumont, Tony KanalRecorded By [Additional Recording] – Tom Dumont, Tony KanalWritten-By – G. Stefani*, R. Price*, T. Dumont*, T. Kanal*

Engineer [Assistant] – Jeff Kanan, Jennifer YoungProducer – No Doubt, William OrbitProgrammed By – Sean SpuehlerProgrammed By [Additional Programming] – Eric White, Gwen Stefani, Tom Dumont, Tony Kanal, Tony KanalRecorded By – Clif Norell*Recorded By [Additional Recording] – Tom DumontWritten-By – G. Stefani*, T. Dumont*, T. Kanal*

Bass [Additional Melodic] – Robbie ShakespeareClavinet, Trombone – Gabrial McNairEngineer [Additional Engineering] – Rory Baker, Tkae MendezEngineer [Additional] – Rory BakerEngineer [Assistant] – Toby WhalenExecutive-Producer – Brian Jobson, Wayne JobsonFeaturing – Lady SawProducer – No Doubt, Sly & RobbieProducer [Additional Production] – Mark "Spike" Stent*Programmed By – Ned DouglasRecorded By – Dan ChaseSaxophone – Andy Potts, Django Stewart, Tony KanalWritten-By – D. Stewart*, G. Stefani*

Engineer [Additional Engineering] – Simon GogerlyEngineer [Assistant] – Anthony Kilhoffer, Ian RossiterProducer – Nellee Hooper, No DoubtProgrammed By – Fabien WaltmannProgrammed By [Additional], Recorded By [Additional] – Tom Dumont, Tony KanalRecorded By – Greg CollinsWritten-By – G. Stefani*, T. Dumont*, T. Kanal*

Engineer [Assistant] – Jeff Kanan, Juan Pablo Velasco, Juan Pablo VelascoKeyboards [Additional] – Ric OcasekProducer – No Doubt, Ric OcasekProducer [Additional Production] – Mark "Spike" Stent*Programmed By, Recorded By [Additional] – Tom Dumont, Tony KanalRecorded By – Karl DerflerWritten-By – G. Stefani*, T. Dumont*, T. Kanal*

Engineer [Additional] – Tkae MendezEngineer [Assistant] – Toby WhalenExecutive-Producer – Brian Jobson, Wayne JobsonKeyboards [Additional] – Gabrial McNairProducer – No Doubt, Steely & ClevieProgrammed By, Recorded By [Additional] – Tom Dumont, Tony KanalRecorded By – Dan ChaseWritten-By – G. Stefani*, T. Dumont*, T. Kanal*

Engineer [Additional] – Ian Rossiter, Simon GogerlyEngineer [Assistant] – Anthony KilhofferProducer – Nellee Hooper, No DoubtProgrammed By – Fabien WaltmannProgrammed By [Additional], Recorded By [Additional] – Tom Dumont, Tony KanalRecorded By – Greg CollinsWritten-By – G. Stefani*, T. Kanal*

Engineer [Assistant] – Ian RossiterProducer – Nellee Hooper, No DoubtProgrammed By – Fabien WaltmannRecorded By – Simon GogerlyWritten-By – G. Stefani*, T. Dumont*, T. Kanal*

Engineer [Assistant] – Jeff Kanan, Juan Pablo VelascoKeyboards [Additional] – Ric OcasekProducer – No Doubt, Ric OcasekProducer [Additional Production] – Mark "Spike" Stent*Programmed By, Recorded By [Additional Recording] – Tom Dumont, Tony KanalRecorded By – Karl DerflerWritten-By – G. Stefani*, T. Dumont*, T. Kanal*

Engineer [Additional Engineering] – Alain JohannesEngineer [Assistant Engineer] – Steve MandelKeyboards, Backing Vocals [Background Vocals] – The Artist (Formerly Known As Prince)Producer – No Doubt, The Artist (Formerly Known As Prince)Producer [Additional Production] – Mark "Spike" Stent*Recorded By – Hans-Martin BuffWritten-By – G. Stefani*, The Artist (Formerly Known As Prince), T. Dumont*, T. Kanal*

Producer – Nellee Hooper, No DoubtProgrammed By – Fabien WaltmannProgrammed By [Additional] – Gwen Stefani, Tom Dumont, Tony KanalRecorded By – Simon GogerlyRecorded By [Additional] – Tom Dumont, Tony KanalWritten-By – G. Stefani*, T. Kanal*