Credits

Britney Spears: Dialogue, Vocals, Backing Vocals, Arranger
Mark "Spike" Stent: Vocal Recording
Guy Sigsworth: Programming, Producer
Andrew Coleman: Recording
Keri Hilson: Backing Vocals
The Neptunes: Producer
Serban Ghenea: Mixing
Cathy Dennis: Backing Vocals
Benny Blanco: Drums, Programming, Producer, Keyboards
Ron Taylor: Additional Edits
Emma Holmgren: Backing Vocals
Bloodshy & Avant: Bass, Programming, Producer, Digital Editing, Keyboards, Multi-Instruments, Recording, Arranger, Additional Guitar
Dr. Luke: Drums, Programming, Producer, Keyboards
John Hanes: Digital Editing, Pro Tools
Max Martin: Programming, Producer, Dialogue, Keyboards, Mixing Engineer, Backing Vocals, Recording
Niklas Flyckt: Mixing
Stephen George: Pro Tools
Ryan Smith: Assistant Engineer
Tom Coyne: Remastering
Jeanette Söderholm: Backing Vocals
Charles McCrorey: Assistant Engineer
Brian "B Luv" Thomas: Digital Editing, Recording
Brian Garten: Recording
Candice Nelson: Backing Vocals
Chaz Harper: Digital Editing
Courtney Copeland: Backing Vocals
Daniel Boom: Assistant Engineer
J.D. Andrew: Assistant Engineer
Jackie Murphy: Creative Director
Jim Beanz: Vocal Producer, Backing Vocals, Additional Vocals
Marcella "Ms. Lago" Araica: Mixing, Recording, Additional Programming
Penelope Magnet: Producer, Backing Vocals, Arranger
Tim Roberts: Assistant Pro-Tools Engineer
BlackCell : Backing Vocals
Dan Ichimoto: Design, Art Direction
David Treahearn: Assistant Engineer
Henrik Jonback: Guitar, Bass
Jonas Östman: Assistant Engineer
Seth Waldmann: Recording, Assistant Engineer
Per Magnusson: Original Recording Producer
Kristian Lundin: Programming, Producer, Keyboards
Rami Yacoub: Producer, Mixing, Mixing Engineer, Backing Vocals, Recording
Thomas Lindberg: Bass
Esbjörn Öhrwall: Guitar
Sean McGhee: Engineer, Mixing, Editing
Valente : Recording Assistant
Eric Weaver: Recording Assistant
Tomas Lindberg: Bass
Brendan Dekora: Recording
Charlotte Björkman: Backing Vocals
David Krueger: Original Recording Producer
Emma Roads: Backing Vocals
Janson & Janson : String Arrangement
Johan Carlberg: Guitar
John Amatiello: Pro Tools
Larry Rudolph: Management
Nana Hedin: Backing Vocals
P-Dub Walton: Digital Editing
Rob Haggert: Assistant Engineer
Steve Lunt: Arranger
Therese Ancker: Backing Vocals
Trixster : Producer
Andreas Carlson: Backing Vocals
Emily Wright: Vocal Editing, Recording
Chris Kasych: Recording Assistant
Claude Kelly: Backing Vocals
Stockholm Session Strings: Strings
Eric Eylands: Recording Assistant
Shellback: Guitar, Programming, Producer, Keyboards, Recording
Meghan Foley: Design, Art Direction
Tatiana Gottwald: Recording Assistant
Sam Holland: Recording
C. "Tricky" Stewart: Programming, Multi-Instruments, Arranger
Danja : Producer
Chad Carlisle: Recording Assistant
Myah Marie: Backing Vocals
Matt Beckly: Vocal Editing, Recording
Bojan "Genius" Dugic: Recording
Kinnda : Backing Vocals
The Clutch : Co-Producer
Jim Carauna: Additional Recording
Robyn Carlsson: Backing Vocals
Chatrin Nyström: Backing Vocals
Jeanette Stenhammar: Backing Vocals
Johanna Stenhammar: Backing Vocals
Roxanna Estrada: Backing Vocals
K. Briscoe: Producer
The Outsyders : Producer
Mike Snow: Mixing Assistant