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In page Dorothy Kirsten:

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By the late 1930s she had an ongoing professional career as a radio singer on WINS, a member of the Kate Smith Chorus, and as a vocalist for pop orchestras. She mentored under Grace Moore from 1938, who had her study in Rome with Astolfo Pescia. Her time in Europe was cut by the outbreak of World War II, and she returned in 1939, debuting at the New York World's Fair.[1] Roles followed at the Chicago Opera Company (Manon, 1940), San Carlo Opera Company (1942), New York City Opera (1943), San Francisco Opera (1945), and New York Philharmonic (1945). Her radio program "Keepsakes" ran for a year in 1943–44.[citation needed]