Sigur Rós Special

Verity Sharp meets the four-piece band Sigur Rós in their native Iceland and on their visit to the UK for the 2007 Electric Proms. They have sold two million albums globally and their haunting music has been used as a soundtrack on trailers for the BBC series Planet Earth. They talk about their unique sound and their film Heima, which chronicles a series of unannounced gigs in Iceland in 2006.