• Richard Marx
• Producer

• Heff Moraes
• Engineer, Mixing

• Duncan Mullins
• Bass

• Danny Saber
• Producer, Mixing, Engineer

• David Thoener
• Mixing

• Richard Travali
• Mixing

• Chris Trevett
• Mixing

• Michael Tucker
• Engineer, Mixing

• Vitamin C
• Performer

• Aubrey Haynie
• Fiddle, Mandolin

• Simon Hale
• Keyboards

• Jonathan McHugh
• Producer, Music Supervisor

• Rafe McKenna
• Engineer

• Robyn
• Performer

• George Spatta
• Engineer

• Tony Coluccio
• Remixing

• Jared Kotler
• Producer

• Jill Tengan
• Assistant Engineer

• Jan Fairchild
• Engineer, Mixing

• Dan Muckala
• Programming, Producer

• Esbjörn Öhrwall
• Guitar

• Charles Pettaway
• Guitar (Acoustic)

• Jason Piske
• Assistant Engineer

• Jacob Schulze
• Producer

• Chaz Harper
• Mastering

• *NSYNC
• Performer

• Joe Anderson
• Executive Producer

• Rich Tapper
• Engineer, Assistant Engineer

• Britney Spears
• Vocals, Vocals (Background)

• Andreas Carlsson
• Vocals (Background)

• Johnny Wright
• Executive Producer

• Isaac Phillips
• Guitar

• Jules Gondar
• Producer

• Blaque
• Performer

• Craig Robert Smith
• Assistant Engineer

• Lance Bass
• Performer

• Mandy Moore
• Performer

• David Simoné
• Executive Producer

• Steve Duda
• Engineer

• Kristian Lundin
• Producer

• Zé
• Arranger

• Pablo Munguia
• Assistant Engineer

• Jennifer Karr
• Vocals (Background)

• Andrew Manzano
• Producer

• BBMak
• Performer

• Christian Burns
• Performer

• JC Chasez
• Producer

• Joey Fatone
• Performer

• David Schulhof
• Music Executive

• Randy Spendlove
• Producer, Music Supervisor

• Jonathan Peters
• Remixing

• Meredith Edwards
• Performer

• Evan Lowenstein
• Vocals (Background)

• True Vibe
• Performer

• Trickside
• Performer

• Melissa Lefton
• Performer

• Rachel Levy
• Music Executive

• Jessica Folker
• Vocals (Background)

• Ryan Spencer Cook
• Vocals (Background)

• Corky James
• Guitar, Vocals

• Joselo Rangel
• Music Executive

• Desmond Child
• Producer

• Eric Darken
• Percussion

• Eddie Bayers
• Drums

• Rob Chiarelli
• Mixing

• Dave Cleveland
• Guitar (Acoustic), Guitar (Electric)

• David Cole
• Engineer, Mixing

• J.T. Corenflos
• Guitar (Electric)

• Mitch Dalton
• Guitar

• Hugo Dwyer
• Mixing

• Paul Franklin
• Guitar (Steel)

• Bruce Gaitsch
• Guitar (Acoustic)

• Brad Gilderman
• Mixing

• Jimmy Harry
• Arranger, Engineer, Producer, Programming

• Jean-Marie Horvat
• Mixing

• Erik Jacobsen
• Engineer

• Adam Kudzin
• Engineer

• Steve Lipson
• Bass, Programming, Producer

• Al Green
• Performer

• Richie Sambora
• Performer