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In page Pierre Schaeffer:

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In 1949, Schaeffer met the percussionist-composer Pierre Henry, with whom he collaborated on many compositions, and in 1951, he founded the Groupe de Recherche de Musique Concrète (GRMC) in the French Radio Institution.[1] This gave him a new studio, which included a tape recorder. This was a significant development for Schaeffer, who previously had to work with phonographs and turntables to produce music.[2] Schaeffer is generally acknowledged as being the first composer to make music using magnetic tape.[citation needed] His continued experimentation led him to publish À la Recherche d'une Musique Concrète (French for "In Search of a Concrete Music") in 1952, which was a summation of his working methods up to that point. His only opera, Orphée 53 ("Orpheus 53"), premiered in 1953.[1]