Sophie Barker (born November 5, 1971) is a British singer and songwriter from London, best known for her work with the British downtempo group Zero 7.
Barker left University College London after two years to become a full-time singer, signing with Sony Records in 1996 with fellow singer under the name "Sirenes". They released three singles, "Blind", "Deep End", and "Sun Don't Shine", before splitting up at the end of 1997. Barker co-wrote Zero 7's biggest hit, "Destiny", and sings the song alongside fellow vocalist Sia Furler and Tina Dico. Barker also co-wrote and sang Zero 7 songs such as "In The Waiting Line" on the album Simple Things, and also the song "Spinning". She also contributed to the follow-up Zero 7 album When It Falls, co-writing the songs "Passing By" and "In Time".
Barker collaborated with musician KK in 2004 to release Lullaby, an album of night-time songs for children. That same year, she appeared as a backing vocalist on Sia Furler's album Colour the Small One, appearing on the track "Natale's Song". She followed this with a solo album entitled Earthbound, released in 2005. Barker has also worked with 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 cover version of John Denver's "Leaving on a Jet Plane". Barker also featured as a guest singer in Quiet Letters by Bliss.
In 2009 Barker collaborated and provided vocals on the album entitled No One Built This Moment by Bliss. In 2010, she signed with the independent record label, Ho Hum Records. According to the label's website, Barker has recorded a new album, Seagull, which was released on 6 May 2011. Seagull spawned two singles, "Say Goodbye" and "Bluebell"