In her second role of this season of "Great Performances at the Met," Lise Davidsen stars as Leonore, who risks everything to save her husband from the clutches of tyranny. David Butt Philip is the political prisoner Florestan, sharing the stage with Tomasz Konieczny as the villainous Don Pizarro, René Pape as the jailer Rocco, and Ying Fang as Marzelline.