Question: Il trovatore and Lady Macbeth of the Mtsensk District, are which type of theater?
Sentence (from "The War Symphonies: Shostakovich Against Stalin"): It focuses on the period between 1936 and 1945, during which Shostakovich composed his Fourth, Fifth, Sixth, Seventh, Eighth, and Ninth Symphonies, but also briefly discusses other works in the composer's oeuvre, such as his "Lady Macbeth of the Mtsensk District.
Relevant evidence: No