Bernd Alois Zimmermann
Born in Monthey, Mariétan studied first at the Geneva Conservatory in 1955–60 with Marescotti and later with, amongst others, Pierre Boulez, Bernd Alois Zimmermann, Gottfried Michael Koenig, Henri Pousseur, and Karlheinz Stockhausen, and his earliest works are squarely in the serialist camp. During the 1960s he began creating outline sketches for improvisation, and beginning in the 1970s became increasingly interested in environmental sound and the problem of noise pollution.