Ok but like... we all know Christine is a hardcore fave for you (which I mean, is absolutely valid) but say you were casting an opera where the female lead *wasn’t* a soprano (idk, Carmen for example) how would you go about that? Sincerely, an intrigued mezzo
My process for casting, just in general, calls for actors with a voice that matches the character. A more bold character would call for a heavier voice, whereas a more graceful character would call for a lighter voice. It would be the same for any auditioned voice (soprano, tenor, etc.). It depends on whether or not I envision the auditionee in the role. Unfortunately, I’m not usually in charge of casting. I had to make threats so Christine could get exposure.
I also would look for actors who work well with other actors (like I said, I am not the final word on casting, otherwise La Carlotta would be out of a job).
(OOC: I think that’s usually how directors audition people, anyway.)