Here, guitarist Gérard Marais was in Dharma Quintet whose Mr. Robinson I once posted (I am still missing their Archipel album, like the commenter said in that inconstant sol post!!), bassist François Mechali I don't know at all, though he was quite phonographically prolific in the years after this and worked once with the great Yochk'o Seffer which is always a good sign, and percussionist Bertrand Gauthier doesn't appear elsewhere. And so putting it all together, like a Venn diagram, this release's info is here.
Music is basically free jazz. The first track: