- Erik Alcock – Guitar
- Julian Alexander – Art Direction, Design
- Mark Batson – Keyboards
- Kip Blackshire – Vocals, Chorus
- Boi 1da – Producer
- Nick Brongers – Producer
- Matthew Burnett – Strings, Additional Production
- Damon "Bing" Chatman – Assistant Coordinator
- Larry Chatman – Production Coordination, Project Coordinator
- Christian Clancy – Marketing
- Kristen Ashley Cole – Vocals, Chorus
- M. Crawford – Composer
- Sean Cruse – Guitar
- Kal "Boogie" Dellaportas – Engineer
- Terry Dexter – Vocals, Chorus
- DJ Khalil – Producer
- DJ Mormile – A&R
- Dr. Dre – Producer, Executive Producer, Mixing
- Eminem – Mixing, Additional Production
- Jordan Evans – Strings, Additional Production
- John Fisher – Studio Manager
- Michael Gamble – Engineer
- Brian "Big Bass" Gardner – Mastering
- Christal Garrick II – Vocals, Chorus
- Nikki Grier – Vocals
- Havoc – Producer
- Emile Haynie – Producer
- Howie Herbst – Assistant Engineer
- Matt Huber – Assistant Engineer
- Chin Injeti – Bass, Guitar
- Tony Iommi – Composer
- Mauricio Iragorri – Engineer
- Joe Strange – Engineer, Assistant Engineer
- Jim Jonsin – Keyboards, Programming, Producer
- Sly Jordan – Saxophone, Vocals, Chorus
- Just Blaze – Producer, Mixing
- Danny Keyz – Keyboards
- Alex Da Kid – Producer, Mixing
- Rich King – Vocals, Chorus
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- Trevor Lawrence – Keyboards
- Spike Lindsey – Assistant Engineer
- Nick Low-Beer – Drum Programming
- Magnedo – Producer
- Deborah Mannis-Gardner – Sample Clearance
- Robert Marks – Engineer
- Rob Marks – Mixing
- Marshall Mathers – Composer
- Steve McEwan – Guitar, Vocals on track 10
- Tracy McNew – A&R
- Alex Merzin – Engineer
- Danny Morris – Keyboards
- Mr. Porter – Producer
- Dawaun Parker – Keyboards
- Nigel Parry – Photography
- Chris "Trife" Patilis – Assistant Engineer
- Kirdis Postelle – Project Coordinator
- Dwayne "Supa Dups" Chin Quee – Drums, Producer, Engineer, Drum Arrangements
- Rahki – Keyboards, Programming
- Khalil Abdul Rahman – Keyboards, Drum Programming
- Luis Resto – Keyboards
- Robert Reyes – Assistant Engineer, Vocal Engineer
- Makeba Riddick – Vocal Producer
- Liz Rodrigues – Vocals
- Paul D. Rosenberg – Executive Producer
- Matthew "Boi 1da" Samuels – Drums, Engineer
- Jason Sangerman – Marketing Coordinator
- Les Scurry – Production Coordination
- Daniel Seeff – Guitar
- Script Shepherd – Producer
- Manny Smith – A&R
- Mike Strange – Guitar (Acoustic), Bass, Guitar, Keyboards, Engineer, Mixing
- Marcos Tovar – Engineer
- Bill Ward – Composer
- Ryan West – Engineer, Mixing
- Jason Wilkie – Assistant Engineer
- Andre Young – Composer
- Ianthe Zevos – Creative Director
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