Peggy's Blue Skylight -- Film Description:
"Filmed in Joyce Wieland and Michael Snow's loft in New York, the film covers a day of friends visiting, writing and drawing from noon of one day to dawn the next day. The soundtrack was done by Paul Blay."
-- Canadian Filmmakers Distribution Centre

Source:
"CFMDC Film Catalogue." Canadian Filmmakers Distribution Centre. http://www.cfmdc.org/.