Sofía Cancino de Cuevas first quartet for strings, catalogued as Op. 1. In 1940, she received an honorable mention for her symphonic poem "El gallo en Pátzcuaro" for orchestra and male choir, in a contest organized by UNAM. In 1941 she directed the presentation of Mozart's "Don Giovanni" at the Arbeu theater, with the participation of singers (baritone), Carlos Mejía (tenor), and Margarita Cueto (soprano), among others. This made her Mexico's first female conductor. In 1944 she founded the Opera School, with which she conducted "La serva padrona" by Giovanni Battista Pergolesi, "Bastien und Bastienne" by Wolfgang Amadeus Mozart, and "Il matrimonio segreto" by
What Men Live By (opera) required. What Men Live By (opera) What Men Live By ("Čím člověk žije" in Czech) is an opera in one act by Bohuslav Martinů to an English libretto by the composer, based on "Where Love Is, There God Is Also" (1885) by Leo Tolstoy, though he chose to use the more universal title of a different Tolstoy story "What Men Live By" (1886). It was composed in 1951-1952 when the composer was living in the U.S.A, and described by him as a 'pastoral-opera'. The opera was premiered as a television broadcast in New York in May 1953. The first staged