Jabarkan Associate producer: Doreen Dorian dari Christina Aguilera (album)

Engineers: Johan Aberg, Paul Arnold, Ali Boudris, David Frank, Dan Garcia, Ron Harris, Mike Hatzinger, Al Hemberger, Phil Kaffel, Steve Kipner, Doc Little, Mario Lucy, Michael C. Ross, Robin Thicke, Aaron Zigman,

Assistant engineers: Tom Bender, Joe Brown, Terri Wong

Mixing: Rob Chiarelli, Jeff Griffin, Mick Guzauski, Tim Lauber, Peter Mokran, Dave Pensado, Robin Thicke, Tommy Vicari, Dave Way

Mixing assistants: Tony Flores, Jeff Griffin, Michael Huff, Tim Lauber

Digital editing: Jeff Griffin, Bill Malina