• Colin Mitchell
• Engineer

• Clif Norrell
• Producer, Engineer

• Dave Pensado
• Mixing

• Joel Peskin
• Horn

• Luis Resto
• Keyboards, Producer

• Ray Seay
• Mixing

• Scott Storch
• Producer

• Phil Tan
• Mixing

• Meech Wells
• Producer

• Serban Ghenea
• Mixing

• Steven "Lenky" Marsden
• Keyboards

• Glen Marchese
• Mixing

• John King
• Producer

• Chris Bellman
• Mastering

• Steve Baughman
• Mixing

• Craig Love
• Guitar

• Jonathon "Lil' Jon" Smith
• Producer, Mixing

• Josh Butler
• Engineer

• Mike Elizondo
• Producer

• Lisa Light
• Violin, Programming, Vocals, Guitar (Bass)

• Steve Sola
• Mixing

• Tony Kanal
• Keyboards, Programming, Producer

• Andrew Coleman
• Engineer

• Eminem
• Producer, Mixing

• The Neptunes
• Producer

• Carlisle Young
• Mixing

• Punch
• Producer, Musician

• Swizz Beatz
• Producer, Mixing

• Jason Carson
• Assistant

• Patrick Viala
• Engineer

• Sammy Fisher
• Producer

• 50 Cent
• Vocals

• Diesel
• Producer

• Billy Hume
• Mixing

• J.D. Andrew
• Engineer

• Adrian Hall
• Engineer

• Fergie
• Vocals

• Chuck Reed
• Engineer

• Adam Hawkins
• Engineer

• Tracy Brown
• Engineer, Mixing

• Tal Herzberg
• Producer, Engineer, Digital Editing

• Tony Campana
• Engineer

• Brian "Big Bass" Gardener
• Mastering

• Tyrice Jones
• Producer, Engineer

• The Dust Brothers
• Producer, Beats

• Bryan-Michael Cox
• Producer

• K-1 Million
• Producer

• Tom Baker
• Mastering

• Robert Orton
• Mixing

• Morgan Garcia
• Engineer

• Terence Yoshiaki
• Producer

• Neal Ferrazzani
• Engineer

• Mauricio "Veto" Irragorri
• Engineer, Mixing

• Chris Carmouche
• Engineer

• José "Chito" Martínez
• Scratching

• Warren Bletcher
• Assistant Engineer

• Kevin "KD" Davis
• Mixing

• Scott Blonde
• Guitar, Drums, Programming, Vocals

• Jason Proctor
• Keyboards, Programming

• Brian Lodato
• Engineer, Mixing

• Jason Finkel
• Assistant Engineer

• Jose Borges
• Assistant Engineer

• Matt Read
• Package Design

• Bram Tobey
• Mixing Assistant

• Jake One
• Producer

• John Netti
• Engineer

• Brad Breeck
• Sound Design

• Ariel Chobaz
• Mixing Assistant

• Gary Fly
• Mixing Assistant

• Sean Garrett
• Producer

• Kameron Houff
• Engineer

• L.T. Moe
• Producer

• Mike Laza
• Assistant Engineer

• Stu "Bassie" Brooks
• Bass

• Mike "Angry" Eleopoulos
• Engineer, Assistant

• Luke Watson
• Package Design

• "Fredwreck" Farid Nassar
• Producer

• Ky Miller
• Engineer

• Julian Chan
• Engineer

• Clark Pardee
• Sequencing

• Reace Beats
• Producer

• Danny Cheung "Stems"
• Engineer

• Mike Simpson
• Producer

• Alan Ayoub
• Guitar

• Butta
• Producer

• Hennessy Williams
• Producer

• Dorian Carter
• Producer

• Doctor Dre
• Producer, Mixing

• Matt Dorfman
• Package Design

• Dylan "3-D" Dresdow
• Engineer

• Steve Fisher
• Engineer

• Chris Kraus
• Engineer

• Nrian Lapin
• Producer, Engineer

• Jason "Lil Aroma" Villaroman
• Engineer

• Mr. Yoshiaki
• Drum Programming

• Mike Nemirovsky
• Assistant

• Girogio Twinfort
• Producer

• James "L Roc" Phillips
• Keyboards

• Irene Silva
• Graphic Coordinator

• Polow DaDon
• Arranger, Producer, Engineer

• Beck
• Harmonica, Guitar (Bass), Vocals, Producer, Engineer, Vocoder, Mixing

• Charlie Bisharat
• Violin (Electric)

• Luis Conte
• Percussion

• Ron Fair
• Organ, Guitar, Harmonica, Piano, Producer, String Arrangements, Vocal Producer, Orchestra Bells

• John Frye
• Mixing

• Gary Grant
• Horn

• Jerry Hey
• Horn

• LaMarquis Mark Jefferson
• Guitar (Bass)

• Danny Kalb
• Engineer

• Steven King
• Bass, Guitar, Guitar (Bass), Keyboards, Mixing