Teatro Olimpico in Sabbioneta has announced the return of the “Sabbioneta Chamber Opera Festival.” Barbara Frittoli, Sara Mingardo, Laura Polverelli, Vivica Genaux, Joseph Dahdah, Said Gobechiya, and Maria Elena Pepi are among performers. The festival opens with with Mahler’s “Das Lied von der Erde,” directed by maestro Marco Tezza. There will be a concert version of “La Cenerentola in viaggio {…}