The Metropolitan Opera’s experiment with simulcasting its Saturday matinees at movie theatres across North America has so far been a rousing success, and David Patrick Stearns points out that there are some interesting bits of information trickling out of the sales numbers. “Just for fun, guess which opera had the largest single audience. The high-style Julie Taymor production of The Magic Flute? The lovely Anna Netrebko in I Puritani? No, it’s the brand new Tan Dun opera The First Emperor.”