(Photos: © Marcus Lieberenz / Bettina Stöß) The plot of “Lohengrin” is drawn from medieval German literature, a tale of chivalric values set in tenth-century Northern Germany. In this production, the stage during the prelude presents the aftermath of a battle, with corpses scattered across the scene and a comet—possibly Halley’s, which passed in 913 AD—brightening the night sky. Director {…}