- James Yancey: (J Dilla ) Drums, Moog, Keyboards, Producer
- ?uestlove: Assistant, Drums, Executive Producer, Handclapping, Mixing, Producer
- Jon Adler: Assistant
- Marc Baptiste: Photography
- Anthony Bell: Engineer
- Damen Bennett: Flute
- Bilal: Vocals (Background)
- Mary J. Blige: Vocals
- Jill Scott: Vocals (Background)
- Erykah Badu: Vocals (Background)
- Jim Bottari: Assistant
- Josh Butler: Vocal Engineer
- Cee-Lo: Vocals
- Michael Chavez: A&R
- Jeff Chestek: Assistant, Engineer, String Engineer
- Andrew Coleman: Engineer
- Common: Executive Producer
- Tom Coyne: Mastering
- Tim Day: Engineer
- Timothy Day: Engineer
- Derek Dudley: Executive Producer
- Russell Elevado: Mixing
- Todd Fairall: Assistant, Engineer
- Larry Gold: String Arrangements
- Alicia Graham:A&R
- Kenny J. Gravillis: Design
- The Guess Who: A&R
- Nick Howard: Assistant
- Bobbi Humphrey: Flute
- Femi Jiya: Assistant, Engineer
- Jef Lee Johnson: Guitar, Producer
- Scott Kieklak: Vocal Engineer
- Koski Budabin, Dylan: Assistant
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- Dustin Kreidler: Assistant
- Joe Lepinski: Assistant
- Steve Mandel: Assistant, Engineer
- Mark McLaughlin: Assistant
- Shinobu Mitsuoka: Assistant
- Ryan Moys: Engineer
- Pino Palladino: Bass, Producer
- Nicholas Payton: Trumpet
- Bob Power: Mixing
- Bob Powers: Mixing
- James Poyser: Associate Executive Producer, Guitar, Handclapping, Keyboards, Piano, Producer
- Prince: Guitar, Keyboards
- Karriem Riggins: Producer
- Steve Russell: Vocal Engineer
- Chris Steinmetz: Engineer
- Phil Tan: Mixing
- Greg Tardy: Cornet
- Shawn Taylor: Assistant
- Mike Tocci: Assistant, Engineer
- G.A.: Vocals (Background)
- Tye Tribett: Vocals (Background)
- Steef Van De Gevel: Assistant
- Patrick Viala: Mixing
- Blair Wells: Digital Editing
- Pharrell Williams: Vocals (Background)
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