(Credit: Henning-Ross-Sony-Classical) The Orchestra della Svizzera Italiana has announced a cast change for its performance on Oct. 4, 2024 at the Settimane Musicali di Ascona. The orchestra said, due to a sudden illness, soprano Hanna-Elisabeth Müller will unfortunately be unable to perform. Her place will be taken by a highly acclaimed Swiss artist, soprano Regula Mühlemann. Mühlemann will perform Mahler’s Symphony {…}