IN ENGLISH ONLY. “To celebrate the 50 years of the GRM founded by Pierre Schaeffer – and the 60th anniversary of musique concrète, this special issue of Polychrome Portraits is faithful to the collection’s usual format: a monoagraph that will be useful to all members of the artistic communityof today. Pierre Schaeffer was born on August 14, 1910 and died on August 19, 1995. A plural man with a singular career, he has managed to warn, surprise, shock, and invent. Neither a work of praise nor a history lesson, this little book aims at evocating the multiple, interdisciplinary Schaeffer, as he liked to introduce himself. Twenty-five recent and previously unpublished testimonies, some from foreign authors, take us back to the modernity and strength of the man’s ideas, along with his rich and complex personality.” Preface: Emmanuel Hoog, President & General Manager of Ina. Foreword: Évelyne Gayou. Authors: Pierre Shaeffer, Pierre Henry, Brian Kane, Réjean Beaucage, Marcus Erbe and Simon Grintsch, Martin Laliberté, Philippe Langlois, Jacques Perriault, Jean-Claude Risset, John Dack Rolf Inge Godøy, Jacqueline Schaeffer, Evelyne Gayou, François Bayle, Claude Guisard, Francis Coupigny, François Delalande, Beatriz Ferreyra, Roger Cochini, Nicolas Frize, Jean-Michel Jarre, Daniel Teruggi, Marie- Claire Schaeffer, Jocelyne Tournet.”