Watch Online Free FlixHQ. The Rai National Symphony Orchestra, conducted by Michele Gamba, Giulio Pelligra, and Markus Werba, the Turin Teatro Regio Choir, and Maestro Coro Ulisse Trabacchin perform pieces by Giacomo Puccini: Capriccio sinfonico; Le Villi. Preludio e Tregenda; Messa a quattro voci for soloists, choir, and orchestra.