Poppe. Among the pioneers of this field are the o. g. Gottfried Michael Koenig and Iannis Xenakis. Another dimension in the case of some composers is the addition of an ideological or political (as a rule, "left-wing") orientation, which is particularly noticeable in vocal compositions. The quasi father of the idea is Hanns Eisler, later Luigi Nono, Hans Werner Henze, Rolf Riehm, Helmut Lachenmann, Nicolaus A. Huber and Mathias Spahlinger. Especially from the 1970s onwards, a trend towards individualisation sets in, in particular a definitive detachment from serial composing. In the music of our time, one can therefore speak of a stylistic pluralism. In György Ligeti's music for example, musical influences from different cultures and times can be observed. The Italian improviser and composer Giacinto Scelsi, the Englishman Kaikhosru Shapurji Sorabji, the Estonian Arvo Pärt and the Mexican by choice Conlon Nancarrow represent completely independent positions. The American Harry Partch represents a special extreme case: the dissemination of his music was opposed by the fact that it depended on its own microtonal instrumentation. A fixed classification of composers into currents and "schools" cannot be compelling, since many contemporary composers have dealt with several styles in their lifetime (best example: Igor Stravinsky, who, although treated for decades as the antipode of Schoenberg, switched to the serial technique in his old age). In addition, alongside the respective avant-garde, there is a large number of composers who integrate new techniques more or less partially and selectively into their compositional style, which is determined by tradition, or who attempt a synthesis between the two worlds, which is not quite adequately described by the keyword moderate modernism or "naive modernism", because it is too one-sided. Forums Acht Brücken, Cologne Aspekte Salzburg, Salzburg chiffren – Kieler Tage für Neue Musik, Kiel Donaueschingen Festival, Donaueschingen Dresdner Tage der zeitgenössischen Musik, Dresden Eclat (Musikfestival), Stuttgart Ensemble intercontemporain, Paris Festival Archipel, Geneva Festival L’art pour l’Aar, Bern Hallische Musiktage Internationale Ferienkurse für Neue Musik, Darmstadt Internationale Weingartener Tage für Neue Musik, Weingarten ISCM World (New) Music Days Klangwerkstatt Berlin MaerzMusik, Berlin Musicarama, Hongkong Randspiele, Zepernick bei Berlin Tage für Neue Musik Zürich Ultraschall Berlin Warsaw Autumn Weimarer Frühjahrstage für zeitgenössische Musik, Weimar Wien Modern, Wien Wittener Tage für neue Kammermusik Zeit für Neue Musik, Bayreuth Ensembles One of the first ensembles for New Music was the Domaine Musical initiated by Pierre Boulez. In 1976, he founded the Ensemble intercontemporain,