Iconographs is such a composition in which mathematical techniques are brought to bear. Nine separate number series have been generated and carried out to 1024 units. These series are combined by addition to calculate a single number by taking the remainder after dividing the sum of the series by nine. This mod 9 reduction is used to choose a set of pitches. Iconographs is a composition for microcomputer and chamber orchestra written in proportional notation with 1024 time segments grouped into 32 pages of 32 time segments each. The duration for each segment is .618034 seconds, which is the Golden Mean of one second, represented in a horizontal space of .34375 inches. The horizontal space/time-frame proportion is consistent but the actual duration of sounds are only approximate. The duration of the entire composition is 10.54778 minutes with a total horizontal space of 352 inches. The structure of the composition as a whole has no relationship to any of the traditional forms does contain a focus of formal structure at time-frame number 632, the Golden Mean. This focus is expressed by a density of sound events in all parts.