In this opera's final scene the hymn "Salve Regina" is sung by the chorus before the song is changed to "Deo patri sit gloria" by Blanche de la Force when she rejoins the titular group to march to the guillotine.
One character in this opera decides to leave home after being frightened by the shadow of a lamp carried by a servant. A requiem is sung at the beginning of the second act when one character questions whether the deceased had been given the wrong death like a cloakroom attendant would give someone the wrong coat. At the beginning of this opera's third act Constance covers for her friend's cowardice by claiming she cast the sole dissenting vote in a secret ballot. In this opera's final scene the hymn "Salve Regina" is sung by the chorus before the song is changed to "Deo patri sit gloria" by Blanche de la Force when she rejoins the titular group to march to the guillotine. For 10 points name this opera ending with the execution of the titular nuns during the French Revolution by Francois Poulenc.  
One character in this opera decides to leave home after being frightened by the shadow of a lamp carried by a servant.
{Dialogues} of the {Carmelites} (accept {Dialogues des Carmélites})