Engel mixes delicate black-and-white patterns which subtly flicker to produce brief sparkly afterimages (rather like the patterns generated when you close your eyes and press against the lids) with the written word "silence", suggesting an analogy between Cage's advanced music and a possible kind of optical silence. - William Moritz
[Source: William Moritz, 'Jules Engel, Post-Modernist,' Cardiff International Animation Festival program, 1994. Available at the iotaCenter website]