Sigur Rós are an Icelandic ambient/post-rock band from Reykjavík, who have been active since 1994. Known for their ethereal sound, frontman Jónsi Birgisson's falsetto vocals, and the use of bowed guitar, the band's music is also noticeable for its incorporation of classical and minimalist aesthetic elements. The band is named after Jónsi's sister Sigurrós Elin.