Producer: Brent Kutzel - Artist: Gwen Stefani - Producer: Brandon Collins - Mixer: John Nathaniel - Vocalist: Gwen Stefani - Strings Contractor: Brandon Collins - Background Vocalist: Laura Cooksey - Bass: Matt Melton - Acoustic Guitar: Luke Sullivant - Electric Guitar: Luke Sullivant - Keyboards: Grant Pittman - Additional Keyboards: Mike Kutzle - Drums: Jon Hyrkas - Violin: David Davidson - Violin: David Angell - Viola: Betsy Lamb - Violin: Betsy Lamb - Cello: Paul Nelson - Vocal Producer: John Nathaniel - Vocal Producer: Ryan Tedder - Engineer: Grant Pittman - Engineer: Mike Wilson - Engineer: Doug Sarret - Engineer: Tyler Spry - Mastering Engineer: Chris Gehringer