The first audio and unheard film In 1930, the well-known Operetta the “Apaches of Athens” of Ioannis Prineas – Nikos Chatziapostolou, filmed by Dimitris Gaziadis and the company Doug Film SA (Gaziadis Brothers), as “sonic and inaudible”, with the prematurely lost Mary Sagianou – Katselis and the Petros Epikratakis, Ioannis Prineas, Maria Mantiniou, Stella Christoforidou,