questing, quirky icelandic duo sigur ros have crept their way from cult dom to the mainstream (they're a top 30 act in the united states), via a succession of dreamy but increasingly accessible albums. hvarf-heim (haven-home) is the double-disc soundtrack to their heima film, which features them pootling around various icelandic locations including, inevitably a disused herring factory the hvarf disc features radical, spirited re-workings of five old tracks, most notably the peerless hljomalind, formerly known as rokklagid. heim, meanwhile, comprises another six dips into the back catalogue, all rendered acoustically and, allegedly live. von, the only track to appear on both discs, benefits most obviously but each play reveals something else to treasure. mostly gorgeous.