I believe Sondheim has also said that a musical theater work is an opera if it's performed in an opera house, or words to that effect.
It's all semantics, but SWEENEY TODD does fulfill all the requirements and descriptions of an opera, even if you don't want to call it that. And for what it's worth, I don't see any reason why SUNSET BLVD. would need to be an "opera" that would need to be called an "opera," or why it would have to be any more of an "opera" than SWEENEY TODD is. |