After the First World War, he toured Europe and became a prominent conductor. In 1932 he was appointed musical director of the Swedish Royal Opera. He is best known for his 14 string quartets (1920–1972) and eight symphonies (1917–1974, including his symphony no 2 Grave, symphony no 4 Johannes Uppenbarelse, fifth symphony Örtagårdsmästaren and sixth Sinfonia Semplice) as well as Piano Concerto northern
He taught composition privately to amongst others Karl-Birger Blomdahl, Ingvar Lidholm, Åke Hermanson and Daniel Börtz. He died in Stockholm.