Tenjou Sajiki (天井桟敷)

Tenjou Sajiki (天井桟敷, Tenjō Sajiki), was a Japanese independent theater troupe led by Shūji Terayama and active between 1967 and 1983 (until Terayama's death).

A major phenomenon on the Japanese underground scene, the group has produced a number of stage works marked by experimentalism, folklore influences, social provocation, grotesque eroticism and the flamboyant fantasy characteristic of Terayama's oeuvre.

Tenjō Sajiki benefitted greatly from collaborations with a number of prominent artists, including musicians J. A. Seazer and Kan Mikami, and graphic designers Aquirax Uno and Tadanori Yokoo.

https://en.wikipedia.org/wiki/Tenj%C5%8D_Sajiki

Dissenting Japan: A History of Japanese Radicalism and Counterculture from 1945 to Fukushima, by William Andrews, Hurst, 2016 (kindle 2017-8-20)