The current production of "Don Giovanni" at the Metropolitan Opera, running through March 6th, is the opera of the moment, a profoundly political and moral vision that's as much of our time as of Mozart's own. I saw it on Saturday night; it's as much of a historical revelation as it is a musical delight. Mozart's glorious music sets the scene on a monstrosity, and his musical realization of a monstrous world and its …
