Sigur Rós are an Icelandic post-rock band. The name is derived from the name of lead vocalist Jónsi Birgisson's little sister, Sigurrós. They hail from the same creative and vibrant Icelandic music scene as múm and Amiina. They released their first-ever foray into film-making with their tour documentary, Heima in late 2007. Jón Þór Birgisson (Jónsi), Georg Hólm, and Ágúst Ævar Gunnarsson formed the group in Reykjavík, Iceland in August 1994.