2017-2018 cast changes : at Wiener Staastoper Anita Hartig as Marguerite replaces Sonya Yoncheva who replaces Kristine Opolais as Tosca at the Metropolitan Opera.
2017-2018 cast changes : at Wiener Staastoper Anita Hartig as Marguerite replaces Sonya Yoncheva who replaces Kristine Opolais as Tosca at the Metropolitan Opera.
