费尔德曼的音乐在1970年发生了巨大的变化[12] :失去了对图像记谱和无节奏记谱系统的兴趣,开始转向一种在节奏上更确定的方式。 这段时期的第一个作品是一首叫做 《普睿斯夫人上周死于90岁》(英文: Madame Press Died Last Week at Ninety)的短作品,献给他童年的钢琴老师 薇拉·莫兰·普睿斯。
^Feldman, Morton. "Liner Notes." Give My Regards to Eighth Street: Collected Writings of Morton Feldman. Ed. B. H. Friedman. Cambridge: Exact Change, 2000. 4. Print.
Feldman, Morton. 1968. Give My Regards to Eighth Street, Artnews Annual. Included in Give my regards to Eighth Street: Collected Writings of Morton Feldman (2000), The Music of Morton Feldman, and elsewhere.
Gagne, Cole, and Caras, Tracey. 1982. Interview with Morton Feldman. In: Soundpieces: Interviews with American Composers, 164–177. Metuchen, New Jersey: The Scarecrow Press Inc, 1982. Available online (页面存档备份,存于互联网档案馆).
Hirata, Catherin. 2002. Morton Feldman. In: Sitsky, Larry, ed. 2002. Music of the Twentieth-century Avant-garde. Greenwood Publishing Group.
Feldman, Morton. Morton Feldman in Middelburg. Lectures and Conversations. R. Mörchen, ed. Cologne: MusikTexte, 2008.
Feldman, Morton. Give my regards to Eighth Street: Collected Writings of Morton Feldman. B.H. Friedman, ed. Cambridge, MA: Exact Change, 2000.
Gareau, Philip. La musique de Morton Feldman ou le temps en liberté. Paris: L'Harmattan, 2006.
Hirata, Catherin (Winter 1996). "The Sounds of the Sounds Themselves: Analyzing the Early Music of Morton Feldman", Perspectives of New Music 34, no.1, 6-27.
Herzfeld, Gregor. "Historisches Bewusstsein in Morton Feldmans Unterrichtsskizzen", Archiv für Musikwissenschaft Vol. 66, no. 3, (Summer 2009), 218-233.
Lunberry, Clark. "Departing Landscapes: Morton Feldman's String Quartet II and Triadic Memories." SubStance 110: Vol. 35, Number 2 (Summer 2006): 17-50. (Available at http://www.cnvill.net/mftexts.htm (页面存档备份,存于互联网档案馆) [#105 on the list])
Noble, Alistair. Composing Ambiguity: The Early Music of Morton Feldman. Farnham: Ashgate, 2013. ISBN978-1-4094-5164-8