Desc: Xenakis révolution: Le bâtisseur du son: Directed by Stéphane Ghez. With Georges Aperghis, Stéphane Bittoun, Pierre Boulez, Marc Chauveau. A fascinating portrait of the composer, engineer and architect Iannis Xenakis, a leader of the avant-garde and a pioneer of sound and light shows, who turned contemporary music upside down by bringing art and mathematics together.