There is more than one artist with this name:
1) Annie Clark (born 28 September, 1982) is an American multi-instrumentalist singer-songwriter who performs under the moniker St. Vincent. She was a member of The Polyphonic Spree and Sufjan Stevens' touring band. Born in Tulsa, Oklahoma, she began playing the guitar at the age of 12 and as a teenager worked as the tour manager for her uncle's band Tuck & Patti. She grew up in Dallas and attended Lake Highlands High School, graduating in 2001. Following this, she went on to attend Berklee College of Music, dropping out 3 years later. Soon after this, she joined The Polyphonic Spree. In 2003, during her time at Berklee, she released an EP with fellow students, entitled RatsLiveOnNoEvilStar.