The xx are an English indie pop band formed in 2005 in Wandsworth, London. The group released its debut album, xx, in August 2009. The album was a commercial and critical success and was ranked highly on many best of 2009 lists, including number one on the list compiled by The Guardian and second for NME. In 2010, the band won the Mercury Music Prize for its debut album. Their second album, Coexist, was released on 10 September 2012.