“Jane Archibald will sing the role of Adele in all 14 performances of the new production of Johann Strauss’s Die Fledermaus at the Met this season. Christine Schäfer, originally scheduled to sing the first six performances of the opera, is ill and unable to travel to the Met for rehearsals. Archibald was originally scheduled to sing the final eight performances of the run.”  So says the Met press office.