Question: Dialogues of the Carmelites was an opera that had a libretto by which French composer and pianist?
Sentence (from "Dialogues of the Carmelites"): The opera tells a fictionalised version of the story of the Martyrs of Compiègne, Carmelite nuns who, in 1794 during the closing days of the Reign of Terror during the French Revolution, were guillotined in Paris for refusing to renounce their vocation.
Relevant evidence: No