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
Comic opera aiming to establish an English school of family-friendly light opera by composers such as Frederic Clay and Edward Solomon as a countermeasure to the continental operettas, commissioned Clay's collaborator, W. S. Gilbert, and the promising young composer, Arthur Sullivan, to write a short one-act opera that would serve as an afterpiece to Offenbach's "La Périchole". The result was "Trial by Jury"; its success launched the Gilbert and Sullivan partnership. "Mr. R. D'Oyly Carte's Opera Bouffe Company" took "Trial" on tour, playing it alongside French works by Offenbach and Alexandre Charles Lecocq. Eager to liberate the English stage from risqué French