Dag Ivar Wirén (15 October 1905 – 19 April 1986) was a Swedish composer. Life. Wirén was born at Striberg near Nora. His father had a roller blind factory, and there were various musical activities in the family home; he took piano lessons, and was a student at the Karolinska school in Örebro, and played the bass drum and celesta in the town orchestra. Wirén studied at the Stockholm conservatory from 1926 to 1931, which gave him much exposure to music from all periods; hearing Arthur Honegger's oratorio King David in 1927 was an important experience.
https://en.wikipedia.org/wiki/Dag_Wir%C3%A9n