Tegan Rain Quin and Sara Kiersten Quin (born September 19 1980, identical twins) are Canadian singer-songwriters, performing as Tegan and Sara.
Biography and musical career
Tegan and Sara were born in Calgary, Alberta. They initially played as PLUNK, and lacked a drummer or bass player. In 1997, the two used their school?s recording studio to record two demo albums: Who's in Your Band? and Play Day. In 1998, they made an early breakthrough by winning Garage Warz Battle of the Bands, a local music competition in Calgary. Since then, the two have toured extensively with many artists, including Neil Young, Rufus Wainwright, Kaki King, The Pretenders, Ben Folds, The Killers, Rachael Cantu, Vivek Shraya, Cake, Gogol Bordello, Hot Hot Heat, Ryan Adams, Veda Hille, Little Birdy, Iron On, Little Brazil, Bryan Adams and Weezer and performed one show at Sarah McLachlan's Lilith Fair. They are signed to Neil Young's Vapor Records in Canada, and to Sire in the United States as their previous lab
Source: http://en.wikipedia.org/wiki/Tegan and Sara