In this photo provided the Metropolitan Opera, Deborah Voigt, left, and Ben Heppner perform in the title roles of Wagner's "Tristan und Isolde" during a dress rehearsal in New York, Wednesday, March 5, 2008. After missing the first four performances of the highly anticipated revival at the Metropolitan Opera, Heppner planned to return Tuesday night, March 25. But Voigt woke up Tuesday with a fever and nausea, spokesman Albert Imperato said, and withdrew from the performance. She was to be replaced by her understudy, Janice Baird. (AP Photo/Metropolitan Opera, Ken Howard)

Read Article