 Anderson also worked on songs for Britney Spears, including "Breathe on Me" for her 2003 album "In The Zone" and two unreleased songs ("State of Grace" and "Grow") originally intended for her album "Blackout".In 2003, he produced and co-wrote three songs for the Holly Valance album "State of Mind", released on Warner Bros. Records.He also co-wrote and produced "Everything You Ever Wanted" for the English-Irish Pop Girl group Girls Aloud's debut album "Sound of the Underground" (Polydor / Universal International).