Briggs will be replaced by South African-born Elza van den Heever, who performed the role of Donna Anna at the Lincoln Theater in Napa Valley and is contracted to sing the role with another opera company in a future season.
General Director David Gockley decided that Briggs was "not ultimately suited for the role of Donna Anna in this production" after the final dress rehearsal, opera officials said Thursday.
Van den Heever, a native of Johannesburg, made her debut with the San Francisco Symphony in 2005 to sing Morton Feldman's "I met Heine on the Rue Fürstenberg." She returned in 2006 to sing second soprano in Mahler's Eighth Symphony in San Francisco and on tour in Europe.
Malaysia needs Russia's assistance in maintaining and repairing Su-30MKM fighter jets
Japanese Prime Minister Shinzo Abe said that US army bases will not appear on the southern Kuril Islands in the even Russia delivers them to Japan
Posters for the play "Adam and Eve. Life after Paradise" with pictures of dancers Arsen Aghamalyan and Oksana Vasilyeva were banned in the city of Tver, Central Russia