The further you explore Sigur Rós' post-rock, the more vivid and nuanced it gets. Listen closely to the soft scrapes of bowed guitar warmed by delicately played piano on "Ágætis Byrjun", while ambient textures pacify ghostly moans trembling through "Untitled 2". Through it all, Jónsi Birgisson's celestial falsetto guides us, as if he were the last light in a post-apocalyptic world.