Lady Macbeth of the Mtsensk District
However, in the 1930s, under the regime of Joseph Stalin, music was forced to be contained within certain boundaries of content and innovation. Classicism was favoured, and experimentation discouraged. (A notable example: Shostakovich's veristic opera Lady Macbeth of the Mtsensk District was denounced in Pravda newspaper as "formalism" and soon removed from theatres for years).