Martinelli remains a legend of stamina and longevity in the opera world, particularly for a heroic tenor, a type of voice not always associated with longevity. He made his opera debut in 1908 and sang his last performance in 1967. His voice was not, by contemporary accounts, as huge as that of most heroic tenors, but he had such strong focus and projection that he more than compensated for this perceived shortfall. Particularly at the Met, Martinelli was considered Caruso's successor in the more dramatic roles, as Gigli was in the more lyrical ones. Martinelli had a strong sen...