Pie Eye Collective gave performances on the East Coast of the United States as well as in Western Europe that consisted of long periods of sensory inundation with combinations of harmonic relationships, which moved slowly from one to the next by means of "laws" laid out by Hollow Man regarding "allowable" sequences and simultaneities.
In 1964 the ensemble contained Adam Augustus III, electric guitar; Dr. Gus, drums and percussion; Hollow Man, electric muffle bass; Mme. Zajj, organ and synthesizers; Pie-Eye, keyboards, piano and synthesizers; and sometimes D'Von James, vibraphone.
Most of the pieces recorded by Pie Eye Collective have short titles, such as Green Pasta, Descent and Endor. Likewise, the works are often of short length, many pieces having no beginning and no end, existing before and after a particular performance. The longest Pie Eye Collective performance was that given at the Harrison Street gallery in New York, which lasted uninterruptedly for six years, from 1979-1985.