With a repertoire that includes over 35 operas, he is a distinguished Bel Canto interpreter with a repertoire that includes: I Puritani, La Sonnambula, La Donna del Lago and La Fille du Regiment, among others. Mr. Zeffiri is invited by prestigious institutions such as the Teatro alla Scala in Milan, the Opera in Rome, the Théâtre des Champs-Elysées and the Opéra Comique in Paris, the Liceu in Barcelona, the Komische Oper and the Berlin Philharmonie in Berlin, the Carnegie Hall in New York and the theaters of Frankfurt, Hamburg, Dresden, Helsinki, Brussels, Liege and Athens. He claims a privileged collaboration with Riccardo Muti who chose him for Verdi's Requiem, Il Ritorno di Don Calandrino and Demofoonte by Jommelli, Lélio by Berlioz, Rossini's Stabat Mater and Don Pasquale.

Future plans La gazza Ladra at the Teatro Filarmonico in Verona; Lélio at the San Carlo theater in Naples, Roberto Abbado conducting; and Verdi's Requiem in Tel Aviv again under the baton of Riccardo Muti.