Bartok, Sam Ramey, Eva Marton
"Bluebeard's Castle" (CD)

Adam Fischer conducts the Hungarian State Orchestra in Bartok's one-act opera.
Samuel Ramey and Eva Marton perform the two singing roles.

I don't know this piece that well, but knowing that it's origin is near 'the Wooden Prince' which I like a lot.
Sam Ramey sounds amazing, of course.