Backing Vocals – Christina Aguilera, Shelly PeikenGuitar – Bruce Watson, John GouxMixed By – Dave WayMixed By [Assisted By] – Michael HuffProducer, Arranged By – Guy RocheProgrammed By – Guy RocheRecorded By – Mario LuccyRecorded By [Assisted By] – "Famous" Dave Nash*Tambourine – Matt LaugWritten-By – David Frank, Pam Sheyne, Steve Kipner

Backing Vocals – Christina Aguilera, Shelly PeikenGuitar – Bruce Watson, John GouxMixed By – Dave WayMixed By [Assisted By] – Michael HuffProducer, Arranged By – Guy RocheProgrammed By – Guy RocheRecorded By – Mario LuccyRecorded By [Assisted By] – "Famous" Dave Nash*Tambourine – Matt LaugWritten-By – Guy Roche, Shelly Peiken

Backing Vocals – Christina Aguilera, Sue Ann CarwellExecutive-Producer – Guy RocheGuitar – Michael Thompson, Tim PierceMixed By – Mick GuzauskiProducer, Arranged By – Guy RocheRecorded By – Mario LuccyRecorded By [Assisted By] – "Famous" David Nash*, Tom BenderSynthesizer [Moog] – Jon Glaser*Written-By – Diane Warren

Arranged By – Celebrity Status, Ron FairGuitar – John GouxHarpsichord, Piano – Ron FairHorns – Gary Grant, Joel Peskin, Rick Baptiste*Mixed By – Dave WayProducer – ChakDaddy, E. Dawk*, Sol SurvivorProgrammed By, Keyboards – Celebrity StatusRecorded By – Michael C. RossVocals [All Vocals Performed By] – Christina AguileraWritten-By – Chaka Blackmon, Christina Aguilera, Eric Dawkins, Guy Roche, Johan Aberg, Pauli Reinikainen*, Raymond Cham*, Ron Fair, Shelly Peiken

Backing Vocals – Huey DunbarDrum Programming, Bass, Keyboards – Walter AfanasieffEngineer [Assistant] – Caleb Shreve, Derek Carlson, John Hill , Larry Brooks , Louis Salveson, Matt Price , Michael Darby , Michael McCoy, Nick Marshall, Pete Krawiec, Rob Devlin Guitar – Michael LandauKeyboards [Additional Programming], Drum Programming [Drum & Rhythm Programming] – Robert ConleyMixed By – Tony MaseratiMixed By [Assisted By] – Flip OsmanPercussion – Danny LópezProducer [Production Coordination] – Rich DavisProducer, Arranged By – Walter AfanasieffProgrammed By [Logic Programming] – Greg BieckRecorded By – Daniel Bloom , Dave Gleason , Dave Reitzas*Written-By – Desmond Child, Gary Burr, Victoria Shaw

Mixed By – Dave "Hard Drive" Pensado*Producer – Missy Elliott, RockwilderProducer [Vocals Produced By] – Ron FairRecorded By – Brian Springer, Dylan "3D" Dresdow*, Michael C. RossWritten-By – Bob Crewe, Kenny Nolan

Mixed By – Dave "Hard Drive" Pensado*Mixed By [Assisted By] – Ethan WilloughbyProducer – Christina Aguilera, RockwilderProducer [Vocals Produced By], Arranged By [Vocals] – Balewa Muhammad, Jasper CameronRecorded By – Oscar Ramirez, Wassim ZreikRecorded By [Assisted By] – Aaron Laply*Written-By – Balewa Muhammad, Christina Aguilera, Dana Stinson, Jasper Cameron, Reggie Noble

Bass – Tarus MateenDrums – Kameron HouffGuitar – Aaron Fishbein, Dave Navarro, John GouxMixed By – Tony MaseratiMixed By [Assisted By] – Anthony KilhofferProducer – Scott StorchProducer [Vocals Produced By] – E. Dawk*Recorded By – Oscar Ramirez, Wassim ZreikRecorded By [Assisted By] – Aaron Leply*, John Morichal*, Kevin Szymanski, Scott WhittingStrings [All Strings Arranged], Conductor – Larry GoldWritten-By – Christina Aguilera, Scott Storch

Cello – Richard Dodd Drums – Brian MacLeodEngineer – David Guerrero, Linda PerryEngineer [Assisted By] – Andrew Chavez, Davy Vain, Rafael SerranoEngineer [Pro Tools] – Davy VainGuitar, Bass, Piano – Linda PerryKeyboards – Damon FoxMixed By – Dave "Hard Drive" Pensado*Mixed By [Assisted By] – Ethan WilloughbyProducer – Linda PerryStrings – The Section QuartetStrings [Additional], Arranged By – Linda PerryViola – Shanti RandallViolin – Eric GorfainWritten-By – Linda Perry

Co-producer – Charles RoaneDrums – DJ PremierGuitar – Tareq AkoniMixed By – Charles "The Mixologist" Roane*Mixed By [Assisted By] – Jordan LawsPercussion – DJ Premier, Ray YslasProducer – DJ PremierProducer [Additional Production] – Christina AguileraProducer [Additional Vocal Production] – Rob LewisRecorded By – Charles Roane, DJ Premier, Oscar RamirezWritten-By – Charles Roane, Chris E. Martin*, Christina Aguilera, Harold Beatty, Kara DioGuardi

Arranged By [Horns] – Linda PerryDrums – Nathan WetheringtonEngineer [Pro Tools] – Andrew ChavezMixed By [Assisted By] – Chris Wonzer, Kristofer KaufmanMixed By, Engineer – Linda PerryPiano, Mellotron, Bass – Linda PerryProducer – Linda PerryProgrammed By – Marc JamesonSaxophone – Glen Berger, Ray HerrmannTrombone – Jim McMillenTrumpet, Contractor [Horn] – Chris TedescoWritten-By – Christina Aguilera, Linda Perry

Arranged By [Strings] – Eric GorfainBass – Paul IllCello – Diego Miralles, John Krovoza, Matt Cooker*, Richard Dodd , Victor LawrenceConcertmistress – Daphne ChenConductor [Strings] – Christopher Anderson-BazzoliContrabass – Francis Senger*, Jason TorreanoDrums – Nathan WetheringtonEngineer – Linda PerryEngineer [Assisted By] – Kristofer KaufmanEngineer [Pro Tools] – Andrew ChavezGuitar – Eric SchermerhornMixed By – Peter MokranMixed By [Assisted By] – Sam Holland, Seth WaldmannPiano – Linda PerryProducer – Linda PerryStrings – The Section Quartet & Friends*Viola – Caroline Buckman, Darrin McCann, David Sage, Leah Katz, Marda ToddViolin – Alyssa Park, Ami Levy, Amy Wickman, Anna Stafford, Cameron Patrick, Isabelle Senger, Josefina Vergara, Julian Hallmark, Julie Rogers , Marcy Vaj*, Marisa Kuney, Melissa Reiner, Susan Chatman, Terry Glenny, Victoria LanierWritten-By – Christina Aguilera, Linda Perry, Mark Ronson

Arranged By [String Arrangement] – Eric GorfainCello – Richard Dodd Engineer – Linda PerryEngineer [Assisted By] – Kristofer KaufmanEngineer [Pro Tools] – Andrew ChavezInstruments [All], Programmed By – Linda PerryMixed By – Tchad BlakeProducer – Linda PerryStrings – The Section QuartetViola – Leah KatzViolin – Daphne Chen, Eric GorfainWritten-By – David Frank, Pam Sheyne, Steve Kipner

Drum Programming – Marc JamesonEngineer – Linda PerryEngineer [Assisted By] – Kristofer KaufmanEngineer [Pro Tools] – Andrew ChavezInstruments [All], Programmed By – Linda PerryMixed By – Tchad BlakeProducer – Linda PerryWritten-By – Christina Aguilera, Linda Perry

Engineer – Linda PerryEngineer [Assisted By] – Kristofer KaufmanEngineer [Pro Tools] – Andrew ChavezInstruments [All], Programmed By – Linda PerryMixed By – Peter MokranMixed By [Assisted By] – Eric WeaverProducer – Linda PerryProgrammed By [Additional Programming] – Marc JamesonWritten-By – Christina Aguilera, Linda Perry

Engineer – Linda PerryEngineer [Pro Tools] – Kristofer KaufmanInstruments [All], Programmed By – Linda PerryMixed By – Peter MokranMixed By [Assisted By] – Eric Eylands, Eric WeaverWritten-By – Linda Perry

Film Director – Diane Martel

Film Director – Diane Martel

Film Director – Richard C. Allen

Film Director – Paul Hunter

Featuring – RedmanFilm Director – David LaChappelle*

Film Director – Floria Sigmondi

Film Director – Jonus Akerlund*

Film Director – Bryan Barber, Christina Aguilera

Film Director – Christina Aguilera, Mathew Rolston*

Film Director – Christina Aguilera, Floria Sigmondi