Tenor Franco Corelli, who died this week at 82, had animal magnetism as a performer, writes Tim Smith. “If you added up the considerable assets of the Three Tenors (even when Jose Carreras, Placido Domingo and Luciano Pavarotti were in their prime), you still couldn’t match Corelli’s vocal opulence, electrically charged phrasing and movie-star looks. His one-of-a-kind packaging thrilled an opera world ever-hungry for tenors.”