Wikipedia
Rafstraumur
"Rafstraumur" ( Icelandic for "Electric Current") is a song written by Jón Þór Birgisson, Orri Páll Dýrason, Georg Hólm of Icelandic post rock band Sigur Rós. The song was originally recorded throughout 2012 and 2013 at the Sundlaugin Studio in Mosfellsbær, Iceland for inclusion on the band's seventh studio album, Kveikur. The record appears as the seventh track on the album. The record was released to radio on November 18, 2013 as a promotional single for Kveikur.
Sigur Rós' recording of "Rafstraumur" was remixed by Canadian electronic musician Cyril Hahn, and was released as a single on October 21, 2013. A music video to promote the single was also produced and created.