a relapse into already outdated compositional techniques. For Adorno, the atonal revolution around 1910 by Schönberg meant the liberation of music from the constraints of tonality and thus the unhindered development of musical expression qua free atonality with the full impulse life of the sounds. In the German-speaking world, Adorno's thinking was then taken up by others Heinz-Klaus Metzger. The first turning point was the period around 1950, when the critic Karl Schumann summed up that the economic miracle had also led to a "cultural miracle". From the 1950s onwards, various developments took place, among others: Aleatoric music (dice coincidence): John Cage, Earle Brown, "moderate aleatoricism": Witold Lutosławski Neo-Dada (from about 1968) Expansion of traditional playing techniques: Helmut Lachenmann, Friedrich Goldmann and the young Krzysztof Penderecki micropolyphony, timbre music: György Ligeti, Polystylistic, collage: Bernd Alois Zimmermann, Alfred Schnittke, the Sinfonia of Luciano Berio. Minimal music in America: among others. Terry Riley; Steve Reich, Philip Glass, John Adams. Low-event, meditative and single-sound-oriented music, also mainly in the USA, close in thought to minimal music, but using other compositional principles (no pattern formation): Morton Feldman, George Crumb, in Germany Peter Michael Hamel and Walter Zimmermann. in Germany: New Simplicity; among its representatives are. Hans-Jürgen von Bose, Peter Michael Hamel, Wolfgang Rihm, Manfred Trojahn, Detlev Müller-Siemens New complexity : continuation of serial and constructive procedures; often emphasis on the performative. Main representatives: Brian Ferneyhough as well as his student Claus-Steffen Mahnkopf Spectral music, especially in France: harmony and melody are derived from the acoustics Gérard Grisey was the initiator, and Tristan Murail is a main representative and repeatedly cited model. Another important representative of spectral music is the Austrian Georg Friedrich Haas. Conceptual music: Peter Ablinger, Antoine Beuger, Johannes Kreidler, Hannes Seidl, Martin Schüttler, Trond Reinholdtsen, Anton Wassiljew. Electroacoustic music: collective term for various conceptions of electronic sound production or transformation: Electronic Music: music composed with synthetically generated sounds that originated in Cologne and initially emanated from Serialism. Its pioneers include Herbert Eimert, Karlheinz Stockhausen and Gottfried Michael Koenig. Musique concrète: Electronic transformation of recorded sounds or noises, representatives include. Pierre Schaeffer, Pierre Henry, Luc Ferrari and Michel Chion Acousmatic music: Music produced electronically in the form of sound objects whose means of sound production are not identifiable. The term became widespread mainly through François Bayle and Francis Dhomont. Algorithmic composition: composition using computer-generated structures – Jean-Claude Risset, Orm Finnendahl, Hanspeter Kyburz, Enno