Artist: Gwen Stefani - Producer: Luke Niccoli - Mixer: Tony Maserati - Vocalist: Gwen Stefani - Bass: Luke Niccoli - Guitar: Luke Niccoli - Keyboards: Luke Niccoli - Programming: Luke Niccoli - Background Vocalist: Ross Golan - Clapping: Ross Golan - Drums: Mano Ruiz - Hammond Organ: Gabrial McNair - Trombone: Gabrial McNair - Keyboards: Eric Stefani - Organ: Eric Stefani - Trumpet: Stephen Bradley - Engineer: Karl Wingate - Mastering Engineer: Chris Gehringer - Composer/Author: Gwen Stefani