Instead, it is what they produce and whether the material fits the distinctive patterns that Jafa questions in his essay 69: «How do we make
black images vibrate in accordance with certain frequential values that exist in Black music?»
As it happened, the all important sheet of etched
black film — required to make the
images interactive — that must be laid over the graphic abstract patterns to create the moiré effects that set them wildly spinning and
vibrating, was accidently left out of the package.