Mazzoleni, Ettore, Canadian conductor, teacher, and composer of Italian-Swiss descent; b. Brusio, Switzerland, June 19, 1905; d. in an automobile accident in Oak Ridges, near Toronto, June 1, 1968. He studied mathematics and music at Oxford Univ. (B.A., 1927; B.Mus., 1927) and piano at the Royal Coll. of Music in London, where he later taught (1927–29). He then settled in Toronto, where he was music master and later an English instructor at Upper Canada Coll. (1929–45). He also taught music history at the Toronto Cons, (from 1932) and conducted its sym. orch. (from 1934), and was made its principal in 1945, continuing in that capacity when it became the Royal Cons, of Music of Toronto in 1952. He retired in 1966. He was assoc. conductor of the Toronto Sym. Orch. (1942–48), and also appeared as a conductor in other Canadiancities. In 1949 he became a naturalized Canadian citizen. He made several transcriptions of folk songs for various instrumental and vocal groups.
—Nicolas Slonimsky/Laura Kuhn/Dennis McIntire