Drum Programming – Will.I.Am*Engineer – Padraic Kerin, Will.i.am*Engineer [Assistant Mix] – Ryan KennedyMixed By – Tony MaseratiProducer – Will.I.Am*Written-By – Bobby Troup, Stacy Ferguson, Will Adams

Arranged By [Strings], Conductor [Strings], Producer [Additional Vocals] – Ron FairBacking Vocals – Fergie (2), Theresa Jones Bailey*Bass – Mike Valerio, Trey HenryBass, Keyboards, Drum Programming, Engineer – Keith HarrisCello – Cecilia Tsan, David Low, Larry Corbett, Suzie KatayamaEdited By [Additional Pro Tools] – Tal HerzbergEngineer – Will.i.am*Engineer [Additional] – Tal HerzbergEngineer [Assistant Mix] – Ryan KennedyEngineer [Assistant] – Neil TuckerFeaturing – Will.I.Am*Guitar – J. CurtisMixed By – Tony MaseratiProducer – Keith Harris, Will.I.Am*Recorded By [Additional] – "Angry" Mike Eleopoulos*Recorded By [Strings] – Allen SidesViola – Andrew Duckles, Brian Dembow, Matt Funes, Thomas DienerViolin – Anatoly Rosinsky, Armen Annasian*, Barbra Porter, Bruce Dukov, Charlie Bisharat, Darius Campo, Helen Nightengale, Josefina Vergara, Julie Gigante, Liane Mautner, Lisa Sutton, Natalie Leggett, Becky Bunnell*, Roberto Cani, Sarah Thornblade, Shoshana Claman, Sid Page, Tiffany Hu*Written-By – Keith Harris, Lionel Richie, Ronald Lapread Sr.*, Stacy Ferguson, Will Adams

Backing Vocals – Jay Anderson (2), Polow Da DonBass, Guitar – Mike HartnettDrums, Percussion – Nate HillsEngineer – Demacio "Demo" Castellon, Jason SchweitzerEngineer [Assistant Mix] – Josh HoughkirkKeyboards – Elvis WilliamsMixed By – Phil TanProducer – Polow Da DonVocals [Additional] – Jay Anderson (2)Written-By – J. Jones*, M. Hartnett*, S. Garrett*, Stacy Ferguson

Engineer – Ethan Willoughby, Printz BoardEngineer [Assistant Mix] – Ryan KennedyMixed By – Tony MaseratiProducer – Printz BoardProducer, Electric Piano [Rhodes], Synthesizer [Moog], Drum Programming – Printz BoardWritten-By – Printz Board, Stacy Ferguson

Bass, Drum Programming – Will.i.am*Engineer – Anthony Kilhoffer, Padraic Kerin, Will.i.am*Engineer [Assistant Mix] – Joe Pelusso*, William DurstMixed By – Ethan WilloughbyProducer, Drums, Keyboards – Will.i.am*Trumpet – Printz BoardWritten-By – Stacy Ferguson, Will Adams

Arranged By – Will.i.am*Drum Programming – Polow Da DonEdited By [Additional Pro Tools] – Tal HerzbergEngineer – Travis DanielsEngineer [Additional] – Tal HerzbergEngineer [Assistant Mix] – Ryan KennedyEngineer [Assistant] – Mack WoodwardFeaturing – LudacrisGuitar – Mike HartnettKeyboards – Elvis WilliamsMixed By – Tony MaseratiProducer – Polow Da Don, Will.i.am*Producer [Additional Vocals] – Ron FairRecorded By [Additional] – "Angry" Mike Eleopoulos*Written-By – Christopher Bridges, Elvis Williams, Jamal Jones, Stacy Ferguson, Will Adams

Bass, Drum Programming – Will.i.am*Edited By [Additional Pro Tools] – Padraic KerinEngineer – Will.i.am*Engineer [Assistant Mix] – Joe Pelusso*, William DurstMixed By – Ethan WilloughbyProducer, Drums – Will.i.am*Written-By – Stacy Ferguson, Will Adams, William Robinson Jr.*

Bass – Mike FratantunoDrum Programming – Will.I.Am*Drum Programming, Guitar – George Pajon Jr.Engineer – George Pajon Jr., Jason VillaromanEngineer [Assistant Mix] – Ryan KennedyMixed By – Tony MaseratiPercussion – Chuck PradaProducer – George Pajon Jr.Written-By – George Pajon Jr., Michael Fratantuno*, Stacy Ferguson

Arranged By [Strings], Conductor [Strings], Producer [Additional Vocals] – Ron FairBass – Mike Valerio, Trey Henry, Will.i.am*Cello – Cecilia Tsan, David Low, Larry Corbett, Suzie KatayamaDrum Programming – Will.i.am*Drums, Bass [Keyboard], Keyboards – Keith HarrisEdited By [Additional Pro Tools] – Tal HerzbergEngineer – Will.i.am*Engineer [Additional] – Tal HerzbergEngineer [Assistant Mix] – Dean NelsonEngineer [Assistant] – Neil TuckerGuitar – George Pajon Jr.Mixed By – Jack Joseph PuigRecorded By [Strings] – Allen SidesViola – Andrew Duckles, Brian Dembow, Matt Funes, Thomas DienerViolin – Anatoly Rosinsky, Armen Annasian*, Barbra Porter, Bruce Dukov, Charlie Bisharat, Darius Campo, Helen Nightengale, Josefina Vergara, Julie Gigante, Liane Mautner, Lisa Sutton, Natalie Leggett, Becky Bunnell*, Roberto Cani, Sarah Thornblade, Shoshana Claman, Sid Page, Tiffany Hu*Written-By – Stacy Ferguson, Toby Gad

Bass, Drum Programming – Will.i.am*Drums – Keith HarrisEngineer – Will.i.am*Engineer [Assistant Mix] – Ryan KennedyEngineer [Assistant] – Jason VillaromanFeaturing – The I-Threes*, Rita MarleyGuitar – George Pajon Jr.Mixed By – Tony MaseratiPiano – Venus BrownProducer – Will.i.am*Written-By – Stacy Ferguson, Vincent Ford, Will Adams

Acoustic Guitar – Simeon SpiegelArranged By [Strings], Conductor [Strings] – Ron FairBass – Mike Valerio, Trey HenryCello – Cecilia Tsan, David Low, Larry Corbett, Suzie KatayamaDrums – Gary NovakEdited By [Additional Pro Tools] – Tal HerzbergEngineer – Rob Boldt*, Simeon SpiegelEngineer [Additional] – Tal HerzbergEngineer [Assistant Mix] – Dean NelsonEngineer [Assistant] – John BraultKeyboards, Drum Programming – Rob Boldt*Mixed By – Jack Joseph PuigProducer – Rob Boldt*, Ron FairRecorded By [Additional] – "Angry" Mike Eleopoulos*Viola – Andrew Duckles, Brian Dembow, Matt Funes, Thomas DienerViolin – Anatoly Rosinsky, Armen Annasian*, Barbra Porter, Bruce Dukov, Charlie Bisharat, Darius Campo, Helen Nightengale, Josefina Vergara, Julie Gigante, Liane Mautner, Lisa Sutton, Natalie Leggett, Becky Bunnell*, Roberto Cani, Sarah Thornblade, Shoshana Claman, Sid Page, Tiffany Hu*Written-By – Renee Sandstrom, Rob Boldt*, Stacy Ferguson, Stefanie Ridel

Arranged By [Strings], Conductor [Strings] – Ron FairBass – Mike Valerio, Nico AbondoloCello – David Low, Larry Corbett, Suzie Katayama, Tim Loo*Edited By [Additional Pro Tools] – Tal HerzbergEngineer – Josh Chervokas, "Angry" Mike Eleopoulos*Engineer [Assistant] – Anthony Caruso (2), Bevin RobinsonMixed By – Allen SidesPiano – John LegendProducer – John Legend, Ron FairProducer [Vocals] – Ron Fair, Stefanie RidelRecorded By [Strings] – Allen SidesViola – Andrew Duckles, Brian Dembow, Thomas Diener, Vicky Misckolczy*Violin – Anatoly Rosinsky, Bruce Dukov, Helen Nightengale, Josefina Vergara, Julie Gigante, Katia Popov, Liane Mautner, Michele Richards, Natalie Leggett, Phillip Levy, Becky Bunnell*, Roberto Cani, Sarah Thornblade, Shoshana Claman, Sid Page, Songa Lee*, Tammy Hatwan*, Tiffany Hu*Written-By – John Stephens (3), Stacy Ferguson, Stefanie Ridel