Indeterminacy in music, which began early in the twentieth century in the music of Charles Ives, and was continued in the 1930s by Henry Cowell and carried on by his student, the experimental music composer John Cage beginning in 1951 (Griffiths 2001), came to refer to the (mostly American) movement which grew up around Cage. This group included the other members of the so-called New York School: Earle Brown, Morton Feldman and Christian Wolff. Others working in this way included the Scratch Orchestra in the United Kingdom (1968 until the early 1970s) and the Japanese composer Toshi Ichiyanagi (born 1933).
Contents |
Any part of a musical work is indeterminate if it is chosen by chance, or if its performance is not precisely specified. The former case is called "indeterminacy of composition"; the latter is called "indeterminacy of performance" (Simms 1986, 357).
In 1958 Cage gave two lectures in Europe, the first at Darmstadt, titled simply "Indeterminacy" (Cage 1961, 35–40), the second in Brussels called "Indeterminacy: New Aspect of Form in Instrumental and Electronic Music" (given again in an expanded form in 1959 at Teacher's College, Columbia). This second lecture consisted of a number of short stories (originally 30, expanded to ninety in the second version), each story read by Cage in exactly one minute; because of this time limit the speed of Cage's delivery varied enormously (Cage 1961, 260). The second performance and a subsequent recording (Cage 1959) contained music, also by Cage, played by David Tudor at the same time. Subsequently, Cage added still more stories, and published a selection of them, partly as an article, "Indeterminacy" (Cage 1961, 260–73), and partly as scattered interludes throughout his first collection of writings, Silence (Cage 1961).
One strand of indeterminacy in music sees it as an aesthetic endeavour that strives to dissolve any fixed properties of music sound into a fluid process and do away with the traditional control of the composer over the material. In its most radical form, all sounds have equal value: sounds chosen by the composer, by the performer, and all the unforeseen and unpredictable sounds that surround us every day. Indeterminacy in this view is philosophically opposed to aleatoric music: there the indeterminate element was kept under careful control by the composer, usually by offering the performers a limited number of possibilities from which to choose.