Merce Cunningham

The connection between Happenings and dance in the early 1960s was part of a larger interdisciplinary relationship. As dance critic Jill Johnston noted, the Judson choreographers, the Pop artists, the Cage/Cunningham axis, the Lower East Side Society, the Happenings creators and the Neo-Dada  or Fluxus performers mixed incestuously in a broad network of social/personal/professional interests.

John Cage 

BLAM! The Explosion of Pop, Minimalism, and Performance 1958-1964 pg. 65

https://www.vogue.com/article/new-whitney-museum-gertrude-vanderbilt-whitney-heirs