He also notably conducted the world premieres of several orchestral works by composer Tālivaldis Ķeniņš, including his fifth and seventh symphonies.
In 1944 he moved to Germany and resided there until 1948 when he immigrated to Canada to join the faculty of the Maritime Academy of Music in Halifax.
[2] In the summer of 1953 Stromberg studied conducting with Leonard Bernstein and Lukas Foss at the Tanglewood Music Center.
[2] In 1957 Strombergs relocated to Toronto to become a vocal coach and conductor for the Canadian Opera Company, a position he held until 1971.
He simultaneously worked as the conductor of the Stratford Festival Theatre Orchestra from 1957-1968 and as the head coach of the Royal Conservatory Opera School housed at the University of Toronto from 1960-1971.