 He then attended courses at the Darmstädter Ferienkurse (1963–65), and in 1964 moved to Paris.A year later he moved to Cologne and enrolled at the Hochschule für Musik Köln, and studied composition with Henri Pousseur, electronic music with Jaap Spek, and phonetics with Georg Heike, while also taking courses with Karlheinz Stockhausen at the third and fourth Cologne Courses for New Music in 1965–66 and 1966–67 (; ).In 1971 he was awarded the Premier Prix d´Esthetique Musicale in the class of Marcel Beaufils at the Conservatoire National Supérieur de Musique in Paris, in 1999 won the UNESCO Composition Prize, and in 2000 was the winner of the Pessoa Prize.