We’ll start with the blasphemy of the year. There’s nothing quite like relaxing at the opera with abundant female nudity, fresh blood, (real) skin piercings, and actual lesbian sex acts. This used to be called porn, and one did not go to the opera for it. Paul Hindemith’s half-hour one-act opera Sancta Susanna (1922), which caused a scandal in its time, has been expanded into a three-hour profane…