Fundación Clarós is set to present “Las Caras de Callas,” a benefit concert in honor of Maria Callas as part of her centenary celebration. The event, slated for Nov. 29, 2023, will take place at the Iglesia del Monasterio de Pedrables in Barcelona. It will feature music by Rossini, Puccini, Bizet, Délibes, Chopin, Bellini, and Saint-Saëns. Audiences will hear soprano {…}