Flush, for six trombones using plunger mutes, was composed in the winter of 1988-89 at the University of North Texas. The ensemble is divided into an on-stage antiphonal quartet - carrying the main structural material - and an offstage duo (unseen by the audience), which "echoes" material of the on-stage players. The main reference of the title is to the alternation and juxtaposition of material: non-metered ("spatial" or "proportional") versus metered ("traditional") notation. In areas of the piece, the players are given certain controlled liberties in which to explore timbral, temporal, and melodic nuances, while other areas are strictly calculated. One pathway through the piece that is suggested by the unfolding of the work's opening, is the gradual transformation and metamorphoses of a single pitch to chaos and back. Flush received a BMI Award in 1989.