How the map works

One step at a time, in three kinds

The organizing premise is that each significant development sits one step from a predecessor, the next move in a line of growth. It is close to how Joseph Straus adapts Harold Bloom's "anxiety of influence" to music: composers misread and rework a specific precursor. Those steps come in kinds. Some extend a parent (Webern to Darmstadt). Some define themselves against one (neoclassicism against Wagner, minimalism against serial density). Some import from outside the tradition (gamelan, raga, West African drumming). The founding split itself, Debussy against Wagner, is a reaction. Typing the links shows that history moves by negation as much as by growth, and it guards against the straight-line teleology Richard Taruskin criticizes in the standard modernist story.

Three axes, kept apart

Categories of this kind answer different questions. Most describe musical material (serialism, spectralism, drone). Some describe a stance toward listeners or participants (populism, participatory art). One describes a mode of production (the market-driven, “neoliberal” composer). A single composer can sit in all three at once, so the map uses material as its organizing axis and treats the market as a lens laid across it. Populism keeps its own band because it has a real stylistic lineage, from Satie and Les Six through Gebrauchsmusik to Americana.

One fork, several roots

The Wagner/Debussy fork explains the European art-music line. Other lines start elsewhere: the American mavericks, African American music from the spirituals onward, and the folk modernisms, which in turn seeded national modernisms from Mexico to Turkey. The AACM meets the New York School as an equal rather than descending from it, following George Lewis's 1996 distinction between Afrological and Eurological approaches to improvisation.

Global modernisms

Modernism was never only European. The global band traces movements that built their own lineages, often with one foot in a local tradition and one in Paris, Vienna, or Darmstadt: Latin American nationalism and the CLAEM generation in Buenos Aires, the Turkish Five, postwar Japan, the Chinese New Wave, African art music, and Australia. Three source traditions (African music, gamelan, and Hindustani and Carnatic music) sit at the left edge because they long predate the map; their dotted links show where composers borrowed from them. Borrowing is never neutral, and Kofi Agawu's work is a good starting point for asking how Western composers framed what they took.

Women on the map

Women appear throughout as figures within the movements they shaped. A few nodes are built around them: Boulanger's studio, the Black concert tradition of Price, Bonds, and Perry, and the radiophonic and film electronics of Oram, Derbyshire, Barron, and Pade. Turn on Women composers above the map to see where they are and where the record thins out. Before 1970 most of these composers worked against exclusion from conservatories, orchestras, and publishers, so the gaps are part of the history.

Teachers are the clearest evidence

Teaching lineages are the strongest proof that a step really is one step. Messiaen taught Boulez, Stockhausen, Xenakis, Grisey, and Murail. Boulanger taught Copland, Carter, Glass, Piazzolla, Bacewicz, and Glanville-Hicks. Price taught Bonds. Cage studied with Cowell and Schoenberg. Varèse taught Chou Wen-chung, who mentored Tan Dun, Chen Yi, and Zhou Long.

Why a timeline

Placing every style at the year it emerged keeps the chronology honest. Much of what gets filed under modernism predates 1920: Mahler died in 1911, Schoenberg's atonality dates from about 1908, and the Rite premiered in 1913. Contemporaries usually taught apart line up visibly: Roldán's percussion Rítmicas and Varèse's Ionisation, or Price's first symphony and Copland's populist turn.

What is still thin

South and Southeast Asian composers beyond the source traditions, the Arab world beyond Egypt, Indigenous composers in the Americas and Australia, the Nordic and Baltic modernisms, and film and media music.

Further reading

Frameworks

• Joseph N. Straus, Remaking the Past: Musical Modernism and the Influence of the Tonal Tradition (Harvard University Press, 1990).
  A rigorous version of the one-step premise.
• Michael Nyman, Experimental Music: Cage and Beyond (1974).
  Frames the experimental vs. avant-garde split between the New York School and Darmstadt.
• Richard Taruskin, The Oxford History of Western Music, vols. 4 and 5 (Oxford University Press, 2005).
• Kyle Gann, American Music in the Twentieth Century (Schirmer, 1997).
• Richard Toop, “Four Facets of ‘The New Complexity,’” Contact 32 (1988).
• Tim Rutherford-Johnson, Music after the Fall: Modern Composition and Culture since 1989 (University of California Press, 2017).
  The best guide to the post-1989 nodes.
• William Robin, Industry: Bang on a Can and New Music in the Marketplace (Oxford University Press, 2021).
  The scholarly treatment of the market lens.
• Alex Ross, The Rest Is Noise: Listening to the Twentieth Century (2007).
  The general-audience narrative most students will already know.

Afrological and global lines

• George E. Lewis, “Improvised Music after 1950: Afrological and Eurological Perspectives,” Black Music Research Journal 16, no. 1 (1996).
  The case for treating the AACM as a parallel root.
• George E. Lewis, A Power Stronger Than Itself: The AACM and American Experimental Music (University of Chicago Press, 2008).
• Samuel A. Floyd Jr., The Power of Black Music (Oxford University Press, 1995).
• Kofi Agawu, Representing African Music: Postcolonial Notes, Queries, Positions (Routledge, 2003).
• Eduardo Herrera, Elite Art Worlds: Philanthropy, Latin Americanism, and Avant-garde Music (Oxford University Press, 2020).
  The history of CLAEM in Buenos Aires.
• Yayoi Uno Everett and Frederick Lau, eds., Locating East Asia in Western Art Music (Wesleyan University Press, 2004).
• Colin McPhee, A House in Bali (1946).

Women composers

• Ellie M. Hisama, Gendering Musical Modernism: The Music of Ruth Crawford, Marion Bauer, and Miriam Gideon (Cambridge University Press, 2001).
• Rae Linda Brown, The Heart of a Woman: The Life and Music of Florence B. Price (University of Illinois Press, 2020).
• Tara Rodgers, Pink Noises: Women on Electronic Music and Sound (Duke University Press, 2010).