Dance documentary

Questions
What is the title?
Who is/are the main artist(s) featured?
Who are the collaborators, if any, and how did they collaborate? For instance, Merce Cunningham collaborated for about fifty years with musician/composer John Cage.
Based on what you see, what do you think are the salient features of this artist’s technique and movement vocabulary?
What are some interesting features of their process? What process(es) do they use? What kinds of questions do they ask? Do they look to subject matter for inspiration? If not, where do they look?
Are there any facts or features of this person(s) life or the historical context in which they are working that you find interesting?
Is there anything you did not understand? Did this work raise any questions for you or inspire you in any way?
How would you rate this video in a 4-star rating? What would your rating be based on?