Hi all,
Tangerine Dream definitely played in the Parc de La Courneuve, a couple of kilometres north of P a r i s. Check out Google Map to see where it is. It was some kind of 2 days political / musical festival (still existing today), organised by the French Communist Party, and happening every year in September. Other bands were : Alan Stivell, Catherine Ribeiro + Alpes, Malicorne, François Béranger, Jacques Higelin, Kevin Coyne, etc...
I was at this show. The TD concert occured on Sunday night. They were the major event. I remember we were all lying on the grass while the sun was slowly falling down... I was just fascinated by the band equipment, which looked like 3 walls of thousand tiny red lights. Stars were shining above us. It was beautiful. There were maybe 30 or 50 000 people there, so I'm quite surprised only one poor quality tape has surfaced so far (TLeave 70).
Unfortunatly, it seems the festival promoters never recorded any bands playing there. They were probably too busy talking about politics.