He sang roles as diverse as Arturo (in Bellini's "I Puritani") and Otello (in Verdi's "Otello"). In the process, he cemented his position as one of the supreme opera singers of the 20th century, even though he faced stiff competition from a remarkable crop of rival Mediterranean tenors during his prime in the 1925-1940 period. (They included Beniamino Gigli, Giovanni Martinelli, Aureliano Pertile, Francesco Merli, Galliano Masini, Tito Schipa, Antonio Cortis and Renato Zanelli—as well as the young Alessandro Ziliani and Giovanni Malipiero.)