and Horacio Ferrer, Astor Piazzolla's poet. Greek collaborations Some of Stefanos important collaborations are with Vicky Leandros and Nana Mouskouri. He also collaborated with various important artists in Greece like Dimitra Galani, Alkistis Protopsalti, Mario Frangoulis, George Dalaras, Dimitris Mitropanos, Marinella, Antonis Remos, Sakis Rouvas, Maria Dimitriadi, George Perris and others. He wrote music for the play "Theodora", directed by the memorable Michael Cacoyannis (known for the movie Zorba the Greek). He also wrote the music for the film of Michael Cacoyannis' "Up, down and sideways." During a period of seven years, the period of his "musical adolescence" as Stefanos often refers to, without giving up the classical concerts, he included modern Greek music in his activities, first as arranger – composer and then as a performer of his own compositions, winning multiple platinum albums and performing in front of packed stadiums in Greece, Cyprus and Italy. Orchestra and auditoriums He has collaborated with orchestras such as the Prague Philharmonic Orchestra, the Bulgarian National Radio Symphony Orchestra, the Warsaw National Philharmonic Orchestra, the Leipzig Gewandhaus Orchestra, the Orchestra Mozart and others. He has performed under the baton of acclaimed conductors such as Vladimír Válek, Valeri Vatchev, Alexander Myrat, Dimitris Agrafiotis, Nick Tshouchlos, Simeon Cogan and others. He has performed in great theaters and auditoriums all around the world, like the Concertbaum (Netherlands), the Opera de la Corunia, the Centro Cultural de Belem (Portugal and Brazil), the Carre Theatre of Amsterdam and of course the Athens Concert Hall, the Thessaloniki Concert Hall, and the Odeon Herodus Atticus. He was invited to perform at José Carreras' gala in Leipzig. He also composed the Russian Air Force Anthem that he performed in Kremlin for the celebration of the 85th anniversary of the Federal Air Transport Agency under permission by the Dmitri Shostakovich family for the transcription for piano and orchestra of Shostakovitch's work, the Concertino for two pianos. Stefanos is the official ambassador of Mikis Theodorakis' music in Greece and abroad. In May 2017, at the request of Mikis Theodorakis, he presented symphonic works of the latter, in Cologne, in the presence of the composer himself, and on 1 September 2017, Stefanos once again appeared at the Herodes Atticus theatre, in the framework of a charity concert to support the Association of Friends of Children with Cancer "ELPIDA", next to Maria Farantouri and Sofia Manousaki. Special Olympics He has composed the Special Olympics'