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Fontana Mix (1958): Parts to be
prepared from the score for
the production of any number of tracks of magnetic tape, or for any number
of players, any kind and number of instruments. This is a composition indeterminate
of its performance. There are ten transparent sheets with points, ten drawings
having six differentiated curved lines, a graph having one hundred units
horizontally, twelve vertically, and a straight line, the two last on transparent
material. A sheet with points is placed over a drawing with curves (in
any position). Over these the graph is placed and the straight line is
used to connect a point within the graph with one outside. Measurements
horizontally on the top and bottom lines of the graph with respect to the
straight line give a “time-bracket”
(graph units = any time units). Measurements
vertically on the graph with respect to the intersections of the curved
lines and the straight line specify actions to be made, where the curved
lines represent different kinds of actions and the twenty vertical units
of the graph represent different degrees of these. Thus, sound sources,
their mechanical alteration, changes of amplitude, frequency, overtone
structure, the use of loops, special types of splicing, etc. may be
determined. . . .
John Cage
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