• Graham Lyons
• Engineer

• Steve MacMillan
• Mixing

• Phil Magnotti
• Engineer, Mixing

• Mitch Marine
• Drums

• Jimmy O'Shea
• Bass

• John Pena
• Bass

• John Pierce
• Bass

• Tim Pierce
• Guitar, Engineer, Producer

• Neil Richmond
• Engineer

• Simon Smart
• Engineer, Mixing, Mastering

• Neil Stubenhaus
• Bass

• Andy Timmons
• Guitar, Producer

• Chris Trujillo
• Percussion

• Brett Tuggle
• Organ

• Peter Van Hooke
• Keyboards

• Jeffrey C.J. Vanston
• Keyboards

• Robert Wechsler
• Producer, Mastering, Mixing, Engineer

• Art Wood
• Percussion, Loop

• Sean O'Dwyer
• Assistant

• Norman Goodman
• Engineer

• Dave Shirk
• Mastering

• Derek Sherinian
• Keyboards, Producer

• Carlos Nieto
• Producer, Compilation

• Nigel Lundemo
• Percussion, Loop

• Bobby Huff
• Percussion, Loop

• Mauricio Guerrero
• Engineer

• Matt Gruber
• Engineer

• Walter Clissen
• Engineer, Mixing

• Igor Len
• Keyboards, Producer

• Pascal Fillet
• Mixing

• Marc Moreau
• Engineer

• Jason Moss
• Programming

• Anssi Nykanen
• Drums

• Barry Sparks
• Bass

• Brad Vance
• Mastering

• Seppo Kantonen
• Keyboards

• Albert Law
• Engineer

• Michael Thompson
• Guitar, Producer, Engineer

• Bill Airey Smith
• Assistant

• Jeremy Colson
• Drums

• Markku Kanerva
• Guitar

• Pat McCarthy
• Engineer

• Josh Weaver
• Engineer

• Pekka Pohjola
• Bass, Producer

• Richie Kotzen
• Engineer

• Simon Phillips
• Drums, Producer, Engineer

• Jerry Jordan
• Engineer

• Gary Ferguson
• Drums

• Don Alias
• Percussion

• Dennis Chambers
• Drums

• Marty Friedman
• Guitar, Keyboards, Producer, Engineer

• Arnie Acosta
• Mastering

• Dino Alden
• Mixing

• Gregg Bissonette
• Drums

• Matt Bissonette
• Bass

• Lenny Castro
• Percussion

• Paulinho Da Costa
• Percussion

• Marque Coy
• Engineer

• Mike Daane
• Bass

• Wyn Davis
• Mixing

• Richard Dodd
• Engineer

• Denny Fongheiser
• Percussion, Drums

• Tom Fletcher
• Producer, Engineer, Mixing

• Steve Fontano
• Engineer

• Tony Franklin
• Bass, Mixing

• Mike Fuller
• Compilation Mastering

• David Garfield
• Keyboards

• Bernie Grundman
• Mastering

• Tris Imboden
• Drums

• Anthony Jackson
• Bass

• Andy Johns
• Producer, Mixing, Engineer

• Frances Kelly
• Engineer

• Jim Lang
• Keyboards

• Patrick Leonard
• Keyboards

• Steve Lukather
• Guitar, Producer

• Stuart Hamm
• Bass

• Joe Satriani
• Guitar, Producer, Keyboards

• Neal Schon
• Bass, Producer, Guitar

• Steve Vai
• Guitar, Keyboards, Engineer, Producer, Mixing

• Mo Foster
• Bass, Producer

• Omar Hakim
• Drums

• Mike Stern
• Guitar