We do know, however, from contemporary descriptions that Campanini's voice was robust in tone. It extended up to a strong high C from the chest prior to an irreversible deterioration which began when Campanini was aged only in his forties. It also developed a wide vibrato which reduced its appeal to English-speaking critics. He shared this latter trait (or, in the opinion of British and American opera-goers, technical and stylistic flaw) with a number of other leading Mediterranean tenors of his era, including Gayarre, Stagno, Valero and, from a slightly younger generation, Fernando De Lucia.