Along with my wife and a friend I went to see a performance of Mozart’s The Magic Flute at the East Berlin Opera House. The performance, and the atmosphere, were wonderful. But as one act followed the next, the clock ticked inevitably closer to midnight. I remember racing to Checkpoint Charlie on the way back. We made it just in time, but it was a close call. Of all the performances of The Magic Flute I’ve seen, that had to be the most thrilling.