Ono's work has generally consisted of quiet, personalized, meditative pieces, as well as "event" shows or Happenings, all of which were highly conceptual and often required observer participation to complete. In her "Stone Show" (early 1960s), participants entered a room measuring about 20 square fee
Video art -- that amorphous, ill-defined, ubiquitous beast of the art world -- is blessed with the presence of pioneer Bill Viola. He is one of the few contemporary Video artists who explores the medium both conceptually and sensually, rather than using it as a narrative document or film substitute.