assistant engineering David Emery – assistant engineering Brian "Big Bass" Gardner – mastering Neil Kanal – programming, recording Tony Kanal – keyboards, production, programming, songwriting Gabrial McNair – keyboards Colin Mitchell – recording Dror Mohar – assistant engineering Mark "Spike" Stent – additional production, mixing Charts Weekly charts Year-end charts Certifications Release history References 2000s ballads 2006 songs 2007 singles Gwen Stefani songs Interscope Records singles Music videos directed by Sophie Muller Songs about heartache Songs written by Gwen Stefani Songs written by Tony Kanal Synth-pop ballads