AFTER a couple of years in which Sigur Ros have gone from gradually expanding cult act to a planet-bestriding colossus beloved of film and TV music producers the world over, you have to admire the Icelanders for not trying too hard to break the mould.

This double album - half electric, half not - accompanies their equally sumptuous film Heima and draws its inspiration entirely from their most unusual native land. Hvarf, the plugged-in bit, revisits tracks from their 1994 debut Von and adds some unreleased goodies - ample proof there's a lot more to Sigur Ros than Hoppipolla (y'know, the one from Planet Earth) - while Heim finds them taking an acoustic slant on better known tracks like Samskeyti and Vaka, in which singer Jonso Birgisson's voice truly shines.