The showing of Die Walkure will begin at 10am. It is a 5-hour performance. In what is expected to be a Wagnerian event for the ages, soprano Christine Goerke plays Brünnhilde, the willful title warrior maiden, who loses her immortality in opera’s most famous act of filial defiance. Tenor Stuart Skelton and soprano Eva-Maria Westbroek are the twins Siegmund and Sieglinde, and bass-baritone Greer Grimsley sings the god Wotan. Philippe Jordan conducts.