Are both King Roger and The Devils of Loudun operas?
King Roger: King Roger (Polish: "Król Roger" , Op. The Devils of Loudun (opera): Die Teufel von Loudun ("The Devils of Loudun") is an opera in three acts written in 1968 and 1969 by Polish composer Krzysztof Penderecki, and then revised in 1972 and 1975.
i don't know