This film is the beginning of an examination of the perceptual and conceptual structures which can be dealt with using pure colour sequences in loop forms with pictorial material. In this case the pictorial material is confined to three landscape locations, and the structure is not mathematically rigorous.
The film by Brakhage commonly referred to as "Wecht" does indeed exist. It doesn't have a titlecard at the head, and the leader of the original is labeled "Portrait" in Stan's handwriting, so I'm not sure where the 'Wecht' title comes from.
Jack White throws a big party at which many of the artists he has produced perform. He has had an eventful life in which he has always remained true to his ideals, first as a footballer, then as a pop singer and then as a producer, even in the face of fierce opposition from others.
A frustrated Frankfurt innkeeper is recruited as an agent for the "Gehlen Organization" and after a short training period, during which he is familiarized with sophisticated espionage methods, he takes his first steps as a spy.