Sophie Barker is a singer best known for her work with the British downtempo group Zero 7. Sophie left University College London after two years to become a full-time singer, signing with Sony Records. She is the co-writer of the band's biggest hit, "Destiny", and sings the song alongside fellow vocalist Sia Furler. Barker also co-wrote and sang Zero 7 songs such as "In The Waiting Line" on the Zero 7 album Simple Things, which has sold more than one million copies worldwide, and also the song "Spinning". Barker also contributed to the follow-up Zero 7 album, When It Falls, co-writing the songs "Passing By" and "In Time." Barker released a solo album, Earthbound, in 2006, and also Lullaby, an album of soothing night-time songs for children, a collaboration with musician KK. Barker has also worked with the The Egg, electronica artists Grooverider and Groove Armada and the acid-jazz duo Muki. Barker was featured in a 2006 British Airways UK television campaign singing a version of John Denver's "Leaving on a Jet Plane". Sophie also features as a guest singer in Quiet Letters by Bliss. In 2009 she has also collaborated and provided vocals on the album entitled No One Built This Moment (Music for Dreams) by Bliss (band)