In fact, it’s a story that is more than two centuries old, one that composer Wolfgang Amadeus Mozart and librettist Lorenzo Da Ponte transformed into one of the greatest operas of all time, “Don Giovanni.” “You don’t have to look very far to find examples of these things happening today,” said director Denni Sayers, who is overseeing Tulsa Opera’s production of “Don Giovanni.” “ ‘Don Giovanni’ may have premiered in 1787, but the story it tells speaks directly to the world today.”