He died in Stockholm .
He was principal conductor of the Helsinki Philharmonic Orchestra 1942 -- 1943 , and also returned to the Royal Swedish Opera as chief conductor from 1938 to 1946 .
conductor died in Stockholm .
He was principal conductor of the Helsinki Philharmonic Orchestra 1942 -- 1943 , and also returned to the Royal Swedish Opera as chief conductor from 1938 to 1946 .