1. Morton Feldman, “Crippled Symmetry,” in Give My Regards to Eighth Street: Collected Writings of Morton Feldman, ed. B. H. Friedman (Cambridge, Mass.: Exact Change, 2000), 147.See also Morton Feldman, “‘I am interested in the commitment’: Conversation with Frits Lagerwerff, 4July 1987,” by Frits Lagerwerff, in Morton Feldman in Middelburg: Words on Music, ed. Raoul Mörchen (Köln: MusikTexte, 2008), 786.
2. Straightening the Record: Morton Feldman's Return to Graph Music