Le Groupe de Recherches Musicales, known for their development of musique concrete, founded their methods of research and particular techniques on confronting the musical act and the electro-acoustical means. Grouped around Pierre Schaeffer and François Bayle, composers and researchers try to give new direction to musical activity using a program of Fundamental Research and Expression. This resulted in original compositions for the ballet, theatre, cinema & television. This LP provides examples of the movement from: Pierre Boulez, Karlheinz Stockhausen, Bernard Parmegiani, Luc Ferrari & more.