Backing Vocals – Mimi (Audia) Parker*Engineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – David Treahearn, Kevin MillsGuitar [Additional] – Rusty AndersonGuitar [Recorded And Performed By], Keyboards [Recorded And Performed By] – Linda PerryMixed By – Mark "Spike" Stent*Producer – Linda Perry, Nellee HooperProgrammed By – Samuel Littlemore*Recorded By – Greg Collins, Ian RossiterWritten-By – G. Stefani*, L. Perry*

Engineer [Assistant] – Brad Winslow, Francis Forde, Jaime Sickora, Rouble KapoorFeaturing – Eve Guitar – Mike ElizondoKeyboards – Mark Batson, Mike ElizondoKeyboards [Bass] – Mark BatsonMixed By – Dr. DreProducer – Dr. DreRecorded By – Greg Collins, Mauricio "Veto" IragorriWritten-By – A. Young*, C. Kreviazuk*, Eve , G. Stefani*, J. Bock*, K. DioGuardi*, M. Batson*, M. Elizondo*, S. Harnick*

Engineer [Assistant] – Jason FinkelMixed By – Phil TanProducer – The NeptunesRecorded By – Andrew Coleman Written-By – C. Hugo*, G. Stefani*, P. Williams*

Drums, Keyboards – Dallas AustinEngineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – Ceaser Guevara*, David Treahearn, Doug Harms, Kevin Mills, Paul SheehyEngineer [MIDI And Sound Design] – Rick SheppardGuitar [Line 6 Guitar], Bass Guitar – Tony ReyesMixed By – Mark "Spike" Stent*Producer – Dallas AustinProducer [Additional Production] – Nellee HooperProgrammed By – Jason LaderRecorded By – Greg Collins, Rick SheppardWritten-By – D. Austin*, G. Stefani*

Engineer [Assistant] – Glen Pittman, Glenn Pittman*, Jaime Sickora, John Warren , Kevin Mills, Nick Ferrero, Sean Tallman, Warren BletcherFeaturing – Johnny VultureMixed By – Greg Collins, Johnny VultureProducer – Johnny VultureProgrammed By, Guitar, Keyboards – Johnny VultureRecorded By – John Frye, Pete NovakVocals [Additional] – Seven*Written-By – A. Benjamin*, G. Stefani*, Seven*

Engineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – David Treahearn, Ian Rossiter, Kevin MillsKeyboards – Sheldon ConrichMixed By – Mark "Spike" Stent*Producer – Nellee Hooper, Tony KanalProgrammed By – Aiden Love*, Chipz , Jason Lader, Simon GogerlyProgrammed By [Mix] – Lee GrovesProgrammed By, Keyboards, Synthesizer – Tony KanalRecorded By – Colin "Dog" Mitchell*, Greg Collins, Simon GogerlyRecorded By [Additional] – Jason LaderVoice [French Spoken Word] – GMR*Written-By – C. Jasper*, E. Isley*, G. Stefani*, M. Isley*, O. Isley*, R. Isley*, R. Isley*, T. Kanal*

Backing Vocals – Naomi Martin , Zoey Bass – Jimmy JamDrums, Percussion – IZ Engineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – David TreahearnGuitar, Keyboards – Bobby Ross AvilaKeyboards – James "Big Jim" WrightMixed By – Mark "Spike" Stent*Producer – Jimmy Jam, Terry LewisProducer [Additional Production] – Mark "Spike" Stent*Recorded By – Ian Cross, Matt MarrinWritten-By – B. R. Avila*, G. Stefani*, I. J. Avila*, J. Q. Wright*, J. Harris III*, T. Lewis*

Engineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – David TreahearnMixed By – Mark "Spike" Stent*Producer – Tony KanalProgrammed By [Mix], Keyboards – Lee GrovesProgrammed By, Keyboards, Synthesizer – Tony KanalRecorded By – Colin "Dog" Mitchell*Written-By – G. Stefani*, T. Kanal*

Backing Vocals – Bernard SumnerBass – Peter HookElectric Guitar, Slide Guitar – Greg CollinsEngineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – David Treahearn, Ian Rossiter, Kevin MillsGuitar – Wendy MelvoinKeyboards – Lisa ColemanMixed By – Mark "Spike" Stent*Producer – Nellee HooperProducer [Additional Production] – Mark "Spike" Stent*Programmed By – Aidan Love, Ewan Pearson, Jason LaderProgrammed By [Mix], Keyboards – Lee GrovesRecorded By – Greg Collins, Simon GogerlyWritten-By – GMR*, G. Stefani*, L. Perry*

Engineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – David TreahearnMixed By – Mark "Spike" Stent*Producer – Tony KanalProducer [Additional Production] – Mark "Spike" Stent*Programmed By [Mix], Keyboards – Lee GrovesProgrammed By, Keyboards, Synthesizer – Tony KanalRecorded By – Colin "Dog" Mitchell*Written-By – G. Stefani*, T. Kanal*

Drums, Keyboards – Dallas AustinEngineer [2nd Assistant] – Rob HaggettEngineer [Assistant] – Ceaser Guevara*, David Treahearn, Doug Harris, Ian Rossiter, Kevin MillsEngineer [MIDI And Sound Design] – Rick SheppardGuitar [Line 6 Guitar], Bass Guitar – Tony ReyesMixed By – Mark "Spike" Stent*Producer – Dallas Austin, Nellee HooperProgrammed By – Aidan Love, Ewan Pearson, Jason LaderRecorded By – Greg Collins, Rick Sheppard, Simon GogerlyWritten-By – D. Austin*, G. Stefani*, L. Perry*

Bass – Aaron MillsEngineer [Assistant] – Glenn Pittman*, Jaime Sickora, Kevin Mills, Nick Ferrero, Sean Tallman, Warren BletcherKeyboards – Andre 3000, Kevin Kendricks*Mixed By – Andre 3000, Greg CollinsPiano – Kevin Kendricks*Producer – Andre 3000Recorded By – John Frye, Pete NovakScratches [Cuts] – Cutmaster SwiffWritten-By – A. Benjamin*, G. Stefani*

Guitar – Wendy MelvoinKeyboards – Lisa ColemanMixed By – Mark "Spike" Stent*Producer – Nellee HooperRecorded By – Greg CollinsWritten-By – GMR*, Gwen Stefani, Linda Perry

Producer – Nellee HooperProducer [Additional Production], Remix – Jacques Lu Cont

Producer – Nellee HooperProducer [Additional Production], Remix – Jacques Lu Cont

Producer, Engineer, Mixed By – Guy Charbonneau

Producer, Engineer, Mixed By – Guy Charbonneau

Producer – The NeptunesRemix – Diplo

Producer – Dallas AustinRemix – Photek

Engineer [Remix] – Colin Mitchell, Neil KanalProducer – The NeptunesProgrammed By [Remix], Keyboards – Neil Kanal, Tony KanalRecorded By – Andrew Coleman Remix – Tony Kanal