“Area by Area the Machine Unfolds”

Since their emergence from the Association for the Advancement of Creative Musicians (AACM) in the 1960s, the members of the Art Ensemble of Chicago have created a distinctive multidisciplinary performance practice centered on collective improvisation. In this article, Steinbeck conceptualizes Art Ensemble improvisations as networks of group interactions, and he analyzes an excerpt from a 1972 Art Ensemble concert recording using a phenomenological perspective informed by his conversations with the group about the performance and by my own experience as an improvised-music practitioner. The analysis focuses on the integration of composed material into the improvisatory process, the functions of stylistic diversity and multi-instrumentalism in Art Ensemble performance practice, and the interactive roles played by Lester Bowie, Roscoe Mitchell, Joseph Jarman, Malachi Favors, and Don Moye.