Acoustic Bass – Alex AlDrums – Michael NeubleEngineer – Andrew Wuepper, Brian "B-Luv" ThomasEngineer [Assistant] – Chris Galland, Luis Navarro, Mimi Parker*Guitar – Robert Bacon*Mixed By – Jaycen JoshuaMixed By [Assistant] – Jesus GarnicaPiano – Eddie Brown*Producer, Producer [Vocals] – C. "Tricky" Stewart*Recorded By – Oscar RamirezWritten-By – Etta James, Leroy Kirkland, Pearl Woods

Arranged By [Horns] – Jim CoxBass – Trey HenryCastanets – Frank CappClarinet, Baritone Saxophone – Dan HigginsDrums – Gordon Peeke, Peter ErskineEngineer – Gabe VeltriGuitar – George DoeringMixed By – Manny MarroquinMixed By [Assistant] – Christian PlataPiano – Jim CoxProducer – Matthew Gerrard, Steve Lindsey Producer [Vocals] – Mark TaylorTenor Saxophone – Gene CiprianoTrombone – Andy MartinTrumpet – Alan KaplanViolin – Charlie BisharatWritten-By – Charlie Midnight, John Patrick Shanley, Matthew Gerrard, Steve Lindsey

Acoustic Bass – Alex AlDrums – Michael NeubleEngineer – Andrew Wuepper, Brian "B-Luv" ThomasEngineer [Assistant] – Chris Galland, Luis Navarro, Mimi Parker*Mixed By – Jaycen JoshuaMixed By [Assistant] – Jesus GarnicaPercussion – Joan Manuel Leguizamo*, Pablo CorreaPiano – Eddie Brown*Producer, Producer [Vocals] – C. "Tricky" Stewart*Recorded By – Oscar RamirezSaxophone – Ben Wendell*Trombone – Alejandro CarballoTrumpet – Arturo SolarWritten-By – Etta James, Joe Josea

Acoustic Bass – Alex AlDrums – Michael NeubleEngineer – Andrew Wuepper, Brian "B-Luv" ThomasEngineer [Assistant] – Chris Galland, Luis Navarro, Mimi Parker*Mixed By – Jaycen JoshuaMixed By [Assistant] – Jesus GarnicaPercussion – Joan Manuel Leguizamo*, Pablo CorreaProducer, Producer [Vocals] – C. "Tricky" Stewart*Recorded By – Oscar RamirezSaxophone – James KingTrombone – Alejandro CarballoTrumpet – Arturo SolarWritten-By – Alain Bernardin, Jacques Morali

Acoustic Bass – Paul IllAlto Saxophone – Mark Hollingsworth Arranged By [Horns] – Dean MoraArranged By [Strings] – Eric GorfainBaritone Saxophone – Ron DziublaCello – Richard Dodd Clarinet – Geoff NudellContractor – Chris TedescoDrums – James GadsonEngineer [Assistant] – Thomas AiezzaEngineer [Protools, Right Hand Man] – Andrew ChavezEngineer [Protools] – Richard Brown Guitar – John Salvatore ScaglioneMixed By – Manny MarroquinMixed By [Assistant] – Christian PlataPercussion – Gordon PeekePiano – Jebin BruniProducer, Engineer – Linda PerryStrings – The Section QuartetTenor Saxophone – Rick KellerTrombone – Jim McMillenTrumpet – Roy Weigand*Viola – Lauren ChipmanViolin – Daphne Chen, Eric GorfainWritten-By – Ralph Rainger

Engineer – Andrew Wuepper, Brian "B-Luv" ThomasEngineer [Assistant] – Chris Galland, Luis NavarroMixed By – Jaycen JoshuaMixed By [Assistant] – Jesus GarnicaPercussion – Joan Manuel Leguizamo*, Pablo CorreaProducer – C. "Tricky" Stewart*Producer [Vocals] – Claude KellyRecorded By – Oscar RamirezSaxophone – James KingTrombone – Alejandro CarballoTrumpet – Arturo SolarWritten-By – Christina Aguilera, C. "Tricky" Stewart*, Claude Kelly

Arranged By – Matt SerleticBacking Vocals – Jess CollinsBass – Chris ChaneyContrabass – Ian WalkerDrums – Josh FreeseGuitar – Joel Shearer, Ray Parker, Jr.*Keyboards – Jamie MuhoberacKeyboards, Programmed By – Matt SerleticMixed By – Chris Lord-AlgeMixed By [Assistant] – Keith Armstrong, Nik KarpenProducer – Matt SerleticProducer [Additional Vocal] – Mark TaylorRecorded By – Doug Trantow, Mark Dobson Recorded By [Assistant] – Alex Arias, Anthony Accurso, Mike LeiszViolin, Viola, Cello – Stevie BlackeWritten-By – Diane Warren

Acoustic Bass, Electric Guitar, Guitar [Baritone] – Gus SeyffertArranged By [Strings], Performer [Strings], Recorded By [Strings] – Oliver KrausDrums – Felix BloxsomMixed By – Manny MarroquinMixed By [Assistant] – Christian PlataPercussion, Programmed By – Samuel Dixon*Piano – Greg KurstinProducer – Samuel Dixon*Recorded By – Eric SpringRecorded By [Assistant] – Graham HopeRecorded By [Vocals] – Oscar RamirezWritten-By – Christina Aguilera, Samuel Dixon*, Sia Furler

Engineer – Andrew Wuepper, Brian "B-Luv" Thomas, Pat ThrallEngineer [Assistant] – Chris Galland, Luis NavarroMixed By – Jaycen JoshuaMixed By [Assistant] – Jesus GarnicaPercussion – Joan Manuel Leguizamo*, Pablo CorreaProducer – C. "Tricky" Stewart*Producer [Vocals] – Claude KellyRecorded By – Oscar RamirezSaxophone – James KingTrombone – Alejandro CarballoTrumpet – Arturo SolarWritten-By – Christina Aguilera, C. "Tricky" Stewart*, Claude Kelly

Engineer [Pro Tools] – Tal HerzbergMixed By – Peter MokranProducer [Vocals], Arranged By [Vocals] – Christina Aguilera, Ron FairProducer, Arranged By – Ron Fair, The Phantom BoysProgrammed By, Keyboards – The Phantom BoysRecorded By – Oscar Ramirez, Tal HerzbergRecorded By [Assistant] – "Lil' Tal" Ozz, Eric WeaverWritten-By – Ester Dean, Larry Summerville, Jr.*, Laura Pergolizzi, Marilyn Manson , Melvin K. Watson*, Nicole Scherzinger, Ron Fair, Stefanie Ridel, Tommy Lee James, Twiggy Ramirez