Sigur Rós is an Icelandic post-rock band from Reykhavik, which has been active since 1994. Known for its 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 Elín. The first music video for Fjögur píanó it’s directed by Alma Har’el and stars Shia LaBeouf and Denna Thomsen as a couple trapped in a perpetual cycle of addiction and abuse, set to a somber piano melody that at times hints at some light at the end of the tunnel. The video, an overnight sensation gaining millions of views on Youtube, was applauded as a unique artistic achievement and covered in the media around the world.