- Leo Abrahams – Acoustic guitar, electric guitar
- Christina Aguilera – Composer, Vocals
- Thomas Aiezza – Assistant Engineer
- Brian "Fluff" Allison – Assistant Engineer
- Christopher Anderson-Bazzoli – Conductor
- Maya Arulpragasam – Composer
- Brett Banducci – Viola
- Matt Benefield – Assistant Engineer, Assistant
- Felix Bloxsom – Percussion, Drums
- Denise Briese – Contrabass
- Richard Brown – Assistant Engineer
- Alejandro Carbollo – Trombone
- Dan Carey – Mixing
- Andrew Chavez – Pro-Tools
- Daphne Chen – Violin, Concert Mistress
- Matt Cooker – Cello
- Pablo Correa – Percussion
- Cameron Craig – Engineer
- Greg Curtis – Composer
- Ester Dean – Producer
- Esther Dean – Composer, Background Vocals
- Detail – Composer, Vocal Producer
- Samuel Dixon – Acoustic Guitar, Bass, Piano, Celeste, Composer, Programming, Producer, Engineer
- Richard Dodd – Cello
- B. Edwards Jr. – Composer
- D Face – Artwork
- Johanna Fateman – Composer
- Stefanie Fife – Cello
- Sam Fischer – Violin
- Sia Furler – Composer, Vocal Producer
- Brian Gardner – Mastering
- Terry Glenny – Violin
- Larry Goldings – Piano
- Eric Gordain – String Arrangements
- Josh Gudwin – Engineer
- Kathleen Hanna – Composer
- Kalenna Harper – Composer
- Kuk Harrell – Engineer
- John Hill – Composer, Producer, Engineer, Instrumentation
- Jimmy Hogarth – Acoustic Guitar, Electric Guitar, Engineer
- Chauncey "Hit-Boy" Hollis – Keyboards
- J.J. Hunter – Composer
- Paul Ill – Bass
- Jaycen Joshua – Mixing
- Jamal Jones – Composer
- Josh Mosser – Engineer
- Claude Kelly – Composer, Background Vocals, Vocal Producer
- James King – Flute, Alto Sax, Baritone Sax, Tenor Sax, Snake
- Anna Kostyuchek – Violin
- Oliver Kraus – Strings, String Arrangements, String Engineer
- John Krovoza – Cello
- Marisa Kuney – Violin
- Victoria Lanier – Violin
- Alex Leader – Engineer, Assistant Engineer
- Juan Manuel-Leguizamón – Percussion
|
- Ami Levy – Violin
- Abe Liebhaber – Cello
- Giancarlo Lino – Assistant
- Erik Madrid – Assistant
- Alix Malka – Photography
- Onika Maraj – Composer
- Manny Marroquin – Engineer, Mixing
- Diego Miralles – Cello
- Julio Miranda – Guitar
- Kyle Moorman – Pro-Tools
- Bryan Morton – Engineer
- Luis Navarro – Assistant
- Karolina Naziemiec – Viola
- Neli Nikolaeva – Violin
- Merrill Nisker – Composer
- Cameron Patrick – Violin
- Peaches – Rap
- Jason Perry – Composer
- Linda Perry – Bass, Guitar, Percussion, Piano, Composer, Keyboards, Programming, Producer, Engineer
- Radu Pieptea – Violin
- Christian Plata – Assistant
- Polow da Don – Producer
- Oscar Ramirez – Engineer, Vocal Engineer
- The Real Focus – Producer, Instrumentation
- Melissa Reiner – Violin
- David Sage – Viola
- J.D. Samson – Composer
- Kellii Scott – Drums
- Alexis Smith – Assistant Engineer
- Arturo Solar – Trumpet
- Audrey Solomon – Violin
- Eric Spring – Engineer
- Jay Stevenson – Assistant Engineer
- Jeremy Stevenson – Engineer
- Christopher Stewart – Producer, Composer
- Subskrpt – Engineer, Assistant Engineer
- Switch – Producer, Engineer, Mixing, Instrumentation
- Jenny Takamatsu – Violin
- Tom Tally – Viola
- Dave Taylor – Composer
- Brian "B-Luv" Thomas – Engineer
- Pat Thrall – Engineer
- Le Tigre – Producer
- Jason Torreano – Contrabass
- William Tyler – Composer
- Randy Urbanski – Assistant
- Jessica van Velzen – Viola
- Eli Walker – Engineer
- Bill Wellings – Composer
- Amy Wickman – Violin
- Cory Williams – Engineer
- Rodney Wirtz – Viola
- Richard Worn – Contrabass
- Alwyn Wright – Violin
- Andrew Wuepper – Engineer
|