(Credit: Theater Dortmund) The Oper Dortmund has announced its 2021-22 season. Here is a look at the opera and the vocal performances of the season. Premieres Gabriela Scherer and Stéphanie Müther share the title role in Puccini‘s “Tosca.” James Lee performs Mario Cavaradossi, and Michael Volle and Mandla Mndebele alternate as Scarpia. Gabriel Feltz conducts a production by Nikolaus Habjan. {…}