The Wiener Konzerthaus is set to present a gala entitled “O Sole Nostro” on Nov. 11, 2023. The gala will celebrate the 40th anniversary of the Ristorante Sole and the concert will benefit the St. Anna children’s cancer research. The evening will showcase some of the greatest opera singers in the world including Anna Netrebko, Antonino Siragusa, Boris Pinkhasovich, Camilla Nylund, Clemens Unterreiner, Dmitry Korchak, Fabio Armiliato, {…}