Using a polyphonic musical language that draws on medieval Byzantine chant, Petros Petridis can be considered one of the most important proponents of the Greek National School. The Requiem for the Emperor Constantine Palaiologos mourns the end of the Byzantine Empire with elegiac lyricism culminating in an ultimately uplifting finale. The Third Symphony is a musical tribute to France, Petridis's adopted home, while the Concerto Grosso enriches an older form with contemporary color. All of these works are eminently representative of this composer's significant aesthetic and creative achievements.