Orghast was an experimental play based on the myth of Prometheus, written by Peter Brook and Ted Hughes,[1] and performed in 1971 at the Festival of Arts of Shiraz-Persepolis, which was held annually from 1967 to 1977.
It was written in part in an invented language that Hughes called Orghast, and this eventually also became the name of the piece.
(Avesta is a two-thousand-year-old ceremonial language, in which the letters of the words contain indications of how particular sounds are intended to be heard.)
[4] Brook's and Hughes' purpose in using these languages was to communicate with the audience in pure sound, in a mode in which meaning is conveyed in such a way that is intended to transcend rational discourse.
Believing "the essence of theater to be magic," Orghast was supposed to bring the audience to alternate modes of consciousness, either "beyond themselves or below themselves.