This past season, Met broadcast commentator Ira Siff delighted New York audiences with his survey of the greatest Verdi singers of the past and present. Today\u2019s episode is the first of a three-part series from Ira\u2019s Verdi All-Stars course, discussing performances by Marisa Galvany, Luciano Pavarotti, Renata Scotto, Placido Domingo, and other legendary stars.