He served as music director of CJAY-TV, and was concertmaster and assistant conductor of the Winnipeg Symphony Orchestra from 1942 to 1957.
Andrey Boreyko was the WSO's music director from 2001 to 2006.
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Since then, he has established himself as one of the country's preeminent Pops conductors and arrangers, acting as Principal Pops Conductor for the RPO, the Vancouver Symphony Orchestra, and the Winnipeg Symphony Orchestra, and as guest conductor for numerous other orchestras in the U.S., Canada, and even Monte Carlo.
On March 3, he was invited to the Winnipeg Symphony Orchestra's Northern Landscape concert and was introduced on stage by the conductor of the symphony, Alexander Mickelthwate.
Looking for alternative genres, he left the Winnipeg Symphony Orchestra playing in an assortment of alternative ensembles until, while in Winnipeg, Summer met violinists Darol Anger and shortly after he was invited by David Balakrishnan and Darol to join Turtle Island, and moved to the San Francisco Bay Area in 1985 to perform permanently with the band.