 Besides the Spoleto Festival, Spiros Argiris also served as the Music Director of the Teatro Verdi in Trieste and the Orchestre Philharmonique de Nice.He was best known as an opera conductor and led memorable productions at the Hamburg State Opera, the Deutsche Oper Berlin, the Bavarian State Opera, the Rome Opera, the Frankfurt Opera, the Monte Carlo Opera and the Bastille Opera in Paris.He also conducted in 1988 Jean-Pierre Ponnelle's critically acclaimed production of Britten’s “Peter Grimes” at the Maggio Musicale Fiorentino in Italy  and in 1992 Ruth Berghaus’ famous production of Strauss’ “Rosenkavalier” in the Frankfurt Opera with Deborah Polaski debuting the role of the Marschallin.