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.
This Spanish-Italian co-production tells the story of a man who feels deep guilt for the death of his wife: he, an alcoholic, is convinced that he accidentally caused her fatal fall in their house while he was drunk.
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.