He was still active in musical circles and a champion of the music of Olivier Messiaen and Pierre Boulez in the post-war period; he was a co-founder, with Boulez and Jean-Louis Barrault, of the Domaine musical concert series.
musical theatre | Musical ensemble | musical film | High School Musical | Les Misérables (musical) | Musical theatre | Wicked (musical) | The Phantom of the Opera (1986 musical) | Musical composition | Cats (musical) | musical ensemble | Grease (musical) | Guys and Dolls (musical) | Little Shop of Horrors (musical) | Hair (musical) | Fender Musical Instruments Corporation | Cabaret (musical) | West Side Story (musical) | Rent (musical) | High School Musical 2 | South Pacific (musical) | Mame (musical) | Edwardian musical comedy | Recorder (musical instrument) | musical composition | Hello, Dolly! (musical) | Evita (musical) | Musical instrument | musical instrument | High School Musical 3: Senior Year |
Following the success of works such as the Piano Sonata (1959), performed at the Domaine musical, and works involving choice and chance, he spent a period in America during which he encountered avant-garde figures such as Cage, Merce Cunningham, and Rauschenberg.