Gordian worms are parasites that live inside the likes of DEVO, Terry Riley, Brian Eno, and David Byrne. From Wikipedia:
Conner’s first and possibly most famous film, entitled A Movie (1958), combined his thrift store hunting process and his use of still photography. It is referred to as the Shepard scale. This creates the auditory illusion of a tone that continually ascends or descends in pitch, yet which ultimately seems to get no higher or lower. Shepard tone illusion (YouTube, thanks Gil Kaufman !)
