New York School composer Christian Wolff shares his open-ended conceptions of communal music making with Chicago’s Aperiodic

Christian Wolff is the only living member of the New York School, the coterie of composers that revolved around John Cage during the 1950s and included Morton Feldman, Earle Brown, and David Tudor. Their experimental music mirrored developments in the art world at the time, including Fluxus and abstract expressionism.…