Fever Ray is the solo project of Karin Dreijer Andersson, who is one half of the Swedish electro act The Knife (the other half is her brother Olof Dreijer). Andersson was also the lead singer and guitarist for the defunct indie pop group Honey is Cool. The first, self-titled Fever Ray record was released digitally on January 13, 2009 and its first single "If I Had A Heart" was released on December 15, 2008.