Heyr himna smiður

"Heyr himna smiður" (literally "Hear, smith of the heavens") is a medieval Icelandic hymn written by chieftain and poet Kolbeinn Tumason in the 13th-century. The music that accompanies the text was composed by Þorkell Sigurbjörnsson (1938–2013) in 1973. This was the first known musical setting of the hymn to become widely popular, although the Icelandic composer Sigvaldi Kaldalóns set the text in the early 20th century; today, Sigurbjörnsson’s setting is among the best-known Icelandic hymns overall.