There is not specific category. there was an Opera called Cavalleria Rusticana-which would translate as Rustic Cavalry. No, not the John Wayne variety! a number of operas had backwoods settings, but there were very few (westerns)- one was Girl of the Golden West, which had a different Italian title. the idea of specifically rural opera is not a viable one. I have never heard it used. A "Horse Opera" is a slang term for a Western drama involving horses, but this is not an opera.
The Opera House is known as the Sydney Opera House; therefore, it is in Sydney.
Best known for his opera, Carmen.
Rock Opera
The words -- text -- in an opera are also known as the libretto.
Sydneyas it is known as the sydney opera houseThe Sydney Opera House.
Melodrama or Opera .
The Royal Opera House, commonly known as 'Covent Garden'
Bizet was a French opera composer, best known for Carmen. He was not a singer.
The Threepenny opera was created from the Beggars opera in 1728. It was written by John Gay, a well known plat writer. It was created from the Beggars opera.
libretto
Libretto.
That is known as an opera