 He was a versatile stylist with the unusual agility and his vocal range was astonishingly wide, allowing him to also sing baritone roles such as Tonio in "Pagliacci" and Count Almaviva in "Le nozze de Figaro".Although chiefly a basso cantante, Didur could effectively deliver deep richness of basso profondo that made him one of the foremost interpreters of Boris Godunov.He was also especially praised for his portrayal of Mefistofele in both Gounod's and Boito's operas, and Rossini's Don Basilio.