Artist Biography Available in: Det Norske Solistkor (The Norwegian soloists' choir) is a professional choral ensemble founded in Oslo in 1950 by the composer Knut Nystedt in collaboration with Kåre Siem. Nystedt conducted the group until 1990, when he was succeeded by Grete Pedersen. It is formed of today 26 singers, varied in performance depending on the performed works.