When first created, several different versions were realized, two by Luciano Berio, one by Marc Wilkinson, and two by the composer himself (Sabbe 1977, 175, n. 86).
Henri Matisse | Henri de la Tour d'Auvergne, Vicomte de Turenne | Bernard-Henri Lévy | Henri Dutilleux | Paul-Henri Mathieu | Henri Poincaré | Robert Henri | Henri Mignet | Henri Cartier-Bresson | Henri Fayol | Henri Bendel | Henri Barbusse | Jean-Henri Fabre | Henri-Pierre Roché | Henri Langlois | Henri, Grand Duke of Luxembourg | Henri Fantin-Latour | Paul-Henri Spaak | Jacques-Henri Bernardin de Saint-Pierre | Henri Wallon | Henri Vieuxtemps | Henri Vernes | Henri Salvador | Henri Pousseur | Henri Michaux | Henri Guillaumet | Henri Estienne | Lycée Henri-IV | Henri Tajfel | Henri Sauguet |
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 (Latino 2001).
--This is astounding news, because the Third Sonata has still not been completed, seventeen years after the pianist's death.--> and premiered works by Karlheinz Stockhausen, Henri Pousseur, and Philippe Boesmans.
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 (Muggler 2001).