guitar Bernard Sumner – background vocals Aaron Mills – bass Kevin Kendricks – keyboards, piano CutMaster Swiff – cuts Technical Nellee Hooper – production ; additional production Greg Collins – engineering ; mixing Ian Rossiter – recording ; engineering assistance Kevin Mills – engineering assistance Linda Perry – guitar recording, keyboard recording Mark "Spike" Stent – mixing ; additional production David Treahearn – engineering assistance Rob Haggett – second engineering assistance Dr. Dre – production, mixing Mauricio "Veto" Iragorri – recording Francis Forde – engineering assistance Brad Winslow – engineering assistance Jaime Sickora – engineering assistance Rouble Kapoor – engineering assistance The Neptunes – production Andrew Coleman – recording Jason Finkel – engineering assistance Phil Tan – mixing Dallas Austin – production Rick Sheppard – recording, sound design Doug Harms – engineering assistance Paul Sheehy – engineering assistance Cesar Guevara – engineering assistance André 3000 – production, mixing John Frye – recording Pete Novak – recording Warren Bletcher – engineering assistance Sean Tallman – engineering assistance Glenn Pittman – engineering assistance Nick Ferrero – engineering assistance John Warren – engineering assistance Tony Kanal – production Colin "Dog" Mitchell – recording Simon Gogerly – recording Jason Lader – additional engineering Jimmy Jam and Terry Lewis – production Matt Marrin – recording Ian Cross – recording Ewan Pearson – programming Brian "Big Bass" Gardner – mastering at Bernie Grundman Mastering (Hollywood, California) Artwork Gwen Stefani – creative direction Jolie Clemens – art direction, layout Nick Knight – photography Shinjuko – illustrations Tomoe Ohnishi – illustration coordination John Copeland – logo, border and type illustrations Nicole Frantz – photography, art coordination Cindy Cooper – packaging coordination Charts Weekly charts Year-end charts Decade-end charts All-time charts Certifications and sales Release history Notes References 2004 debut albums Albums produced by André 3000 Albums produced by Dallas Austin Albums produced by Dr. Dre Albums produced by Jimmy Jam and Terry Lewis Albums produced by Nellee Hooper Albums produced by the Neptunes Albums recorded at Henson Recording Studios Dance-rock albums Gwen Stefani albums Interscope Records albums New wave albums by American artists Soul albums by American artists