Edges (1968)

Edges is for any number of players using any sound sources. That the players have some experience improvising is implied. The score consists of a collection of various notations, a few conventional (e.g., ff), most ad hoc, indicating, e.g., play low, or play "dirty" or "in the middle," scattered over one score page. Any number (including just one) of these may be played, in any sequence and repeated. Playing should mostly be not of the notation but in relation to it, for example, at a distance; so for ff play softly (that is, at a great distance), or medium loud (closer), etc.; or for "dirty" make a clear sound (far away), or for "singing" variously deviate from what you imagine singing should be like. Occasionally, the notation may be simply observed, so play ff or just sing. Generally, the score is like a negative image (as in photography) of the sounds to be made on the score, whose "positive" might occasionally be perceptible in the course of a performance.