This video is just of one of the first rehearsals. the piece has changed a lot and it is a group piece.
This video is one of the performances of the piece as it is now. As you might imagine, no video could ever do justice to this work, in which the “being there” experience is more important than what it looks like. Anyway, here it is:
There is also a tumblr I used to gather references for the process. Here it is