Are both pieces The Immortal Hour and L'incoronazione di Poppea an opera?
The Immortal Hour The Immortal Hour is an opera by English composer Rutland Boughton. Boughton adapted his own libretto from the works of Fiona MacLeod, a pseudonym of writer William Sharp.
La Cleopatra La Cleopatra (1789) is an opera seria in two acts by composer Domenico Cimarosa with an Italian libretto by F. Moretti.