Notation
Although Brown precisely notated compositions throughout his career using traditional notation, he also was an inventor and early practitioner of various innovative notations.
In Twenty-Five Pages, and in other works, Brown used what he called "time notation" or "proportional notation" where rhythms were indicated by their horizontal length and placement in relation to each other and were to be interpreted flexibly. However, by Modules I and II in 1966, Brown more often used stemless note heads which could be interpreted with even greater flexibility.
In 1959, with Hodograph I, Brown sketched the contour and character abstractly in what he called "implicit areas" of the piece. This graphic style was more gestural and calligraphic than the geometric abstraction of December 1952. Beginning with Available Forms 1, Brown used this graphic notation on the staff in some sections of the score.
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