Regina Diaz is an opera in two acts composed by Umberto Giordano to a libretto by Giovanni Targioni-Tozzetti and Guido Menasci. It premiered on 5 March 1894 at the Teatro Mercadante in Naples. The lib

Luigi Illica was an Italian librettist who wrote for Giacomo Puccini, Pietro Mascagni, Alfredo Catalani, Umberto Giordano, Baron Alberto Franchetti and other important Italian composers. His most famo