Mr. Palombi starred the main roles in Carmen, Nabucco, Don Carlo, Aida, Tosca, Fedora, Norma, Manon Lescaut, Turandot, Mefistofele, Samson et Dalila, Fanciulla del West, Forza del Destino, Tabarro, Pagliacci, Otello, Andrea Chenier, Trovatore. He sang in many important theatres such as La Scala in Milan, Deutsche Oper in Berlin, Atlanta Opera, Regio in Turin, Opera in Rome, Bayerische Staatsoper in Munich, La Fenice in Venice, New National Theatre in Tokyo, Royal Albert Hall in London, Opéra Royal de Wallonie in Liège, Glyndebourne Opera Festival, Hungarian National Opera in Budapest, Sao Carlos in Lisbon, Cairo Opera, Puccini Opera Festival in Torre del Lago, Oper Frankfurt, Opernhaus in Zurich, Seattle Opera, San Carlo in Naples, Cincinnati Opera, Monte Carlo Opera, Baltimore Opera.