When I mention Lohengrin, I get three possible reactions: the opera, the chocolate bar, the wedding march. Lohengrin is the Wagner opera where you need a guide and a map to try and make sense of it. Richard Wagner concocted the libretto from poems, Greek mythology, and fake history. The end product has nothing the viewer recognizes as any story they ever heard. At the opera, they then spend hours in limbo or are busy rifling through the program they bought.
