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In page Eric Salzman:

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He wrote The New Music Theater: Seeing the Voice, Hearing the Body with Thomas Desi (Oxford University Press, 2008) and Twentieth Century Music: An Introduction (Prentice Hall, 1967; 4th edition, 2001), which has become a widely used textbook in university courses on modern music.[1] He also wrote Making Changes: A Practical Guide to Vernacular Harmony with Michael Sahl (G. Schirmer Inc., 1986), in addition to articles in various publications. He published an essay on the new music theater movement, "Music-Theater Defined: It's ... Well... Um..." [2]