He was music producer for Samuel Beckett's play, "Endgame," in the American Repertory Theatre production at the Loeb Stage in Cambridge, Massachusetts with Ben Halley Jr. (Hamm) and John Bottoms (Clov) in the cast. JoAnne Akalitis was director. Douglas Stein was set designer. Kurt Wilhelm was costume designer. Jennifer Tipton was lighting designer. Philip Glass wrote the prelude and incidental music. Robert Brustein was artistic director.
In addition to being a renowned Western-classical-music producer, having worked with many avant-garde composers such as Charlemagne Palestine, he has been the person primarily responsible for the sound of Philip Glass's recorded work.