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.
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.
Inside the Kit Kat Club of 1931 Berlin, starry-eyed singer Sally Bowles and an impish emcee sound the clarion call to decadent fun, while outside a certain political party grows into a brutal force.