his earliest works), Harry Partch, John Cage, Iannis Xenakis, Morton Feldman, Karlheinz Stockhausen, Pauline Oliveros, Philip Glass, Meredith Monk, Laurie Anderson, and Diamanda Galás. There is another definition of "Avant-gardism" that distinguishes it from "modernism": Peter Bürger, for example, says avant-gardism rejects the "institution of art" and challenges social and artistic values, and so necessarily involves political, social, and cultural factors. According to the composer and musicologist Larry Sitsky, modernist composers from the early 20th century who do not qualify as avant-gardists include Arnold Schoenberg, Anton Webern, and Igor Stravinsky; later modernist composers who do not fall into the category of avant-gardists include Elliott Carter, Milton Babbitt, György Ligeti, Witold Lutosławski, and Luciano Berio, since "their modernism was not conceived for the purpose of goading an audience." The 1960s saw a wave of free and avant-garde music in jazz genre, embodied by artists such as Ornette Coleman, Sun Ra, Albert Ayler, Archie Shepp, John Coltrane and Miles Davis. In the rock music of the 1970s, the "art" descriptor was generally understood to mean "aggressively avant-garde" or "pretentiously progressive". Post-punk artists from the late 1970s rejected traditional rock sensibilities in favor of an avant-garde aesthetic. Theatre Whereas the avant-garde has a significant history in 20th-century music, it is more pronounced in theatre and performance art, and often in conjunction with music and sound design innovations, as well as developments in visual media design. There are movements in theatre history that are characterized by their contributions to the avant-garde traditions in both the United States and Europe. Among these are Fluxus, Happenings, and Neo-Dada. Art movements Abstract expressionism Artivism COBRA Conceptual art Constructivism Cubism Dadaism De Stijl Expressionism Fauvism Fluxus Futurism Happening Imaginism Imagism Impressionism Incoherents Land art Les Nabis Lyrical Abstraction Minimal art Neo-Dada Orphism Pop art Precisionism Primitivism Rayonism Situationism Suprematism Surrealism Symbolism Tachisme Universal Constructivism Viennese Actionism Vorticism Creationism Nadaism Stridentism Ultraist See also Anti-art Bauhaus Experimental film Experimental literature Experimental music Experimental theatre L'enfant terrible List of avant-garde artists Outsider art Relationship between avant-garde art and American pop culture Russian avant-garde References Further reading Robert Archambeau. "The Avant-Garde in Babel. Two or Three Notes on Four or Five Words", Action-Yes vol. 1, issue 8, Autumn 2008. Bäckström, Per (ed.), Centre-Periphery. The Avant-Garde and the Other, Nordlit. University of Tromsø, no. 21, 2007. Bäckström, Per. "One Earth, Four or Five Words. The Peripheral Concept of 'Avant-Garde, Action-Yes vol. 1,