ZNR was a non-group project founded by the late great french composer Hector Zazou and songwriter Joseph Racaille as main members. They recorded two very strange post-prog rock, satiesque kinda dada miniatures chamber music albums: Barricade 3 & Traité de la Mécanique Populaire, at the end of the seventies. This song Garden Party belongs to the second one. Both records were released in vinyl and re-released in CD by Recommended Records. http://www.rermegacorp.com/
The footage is an excerpt from the 1968 film Le Revelateur by Phillipe Garrel.