Besides South America, he also toured Egypt and Italy in 1894, including the small town of Pierolo near Turin where he met his first wife, a Mexican singer named Angela Aranda Arellano.
[8] Didur's North American debut was as Alvise in Ponchielli's La Gioconda at the second season opening of Hammerstein's Manhattan Opera House.
It was the night of "Golden Age" stars, also featuring American debuts of Giovanni Zenatello as Enzo and Jeanne Gerville-Réache as La Cieca, while Lillian Nordica sang the title role, Mario Ancona was Barnaba and Eleanora de Cisnero was Laura.
A year later, Metropolitan Opera engaged Didur as Méphistophélès in Gounod's Faust at the inauguration of the new Brooklyn Academy of Music to be followed two days later by his Ramfis in Giuseppe Verdi's Aida.
On this all-star opening night of the 1908 season, Arturo Toscanini was in the pit and the rest of the cast included Emmy Destinn in her Met debut as Aida, Enrico Caruso (Radames), Louise Homer (Amneris) and Antonio Scotti (Amonasro).
He also sang under the baton of Gustav Mahler in Mozart's Le nozze de Figaro, Smetana's The Bartered Bride and the Met premiere of Tchaikovsky's The Queen of Spades.
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.