The happening, as Kaprow developed it, is a non-verbal, theatrical production that abandons stage-audience structure as well as the usual plot or narrative line of traditional theatre. Although a compartmented organization may be used, the performers are considered as objects -- often kinaesthetically involved -- within an overall design of environment, timing, sound, colour and light. Found environments are often used and built upon, but the events are not casually arrived at, nor are they entirely accidental and spontaneous.
His view was that the Assemblage was to be "handled and walked around", the environment" was to be "walked into", but the happening was to be a genuine "event" involving spectator participation and no longer confined to the museum or gallery. Performers are encouraged to capitalize upon unplanned occurrences while acting out fantasies based on real life within a certain roughly pre-ordained structure that suggests symbolic and universally basic themes and meanings. A field of aesthetic operation is thus created in relation to life, combining artfully determined materials with strong associational properties, and dimensions with events and things from the sphere "outside" of customary definitions for art.more on kaprow
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