Something off the beaten track. Stumbled on this in my music collection tonight. Haven't listened to it in a few years. Loosely described as easy listening avant garde/musique concrete. He studied under Messiaen, Stockhausen and Pierre Schaeffer. If you are familiar with GRM Tools, he was a founding member of GRM, for what it is worth.
I have fast forwarded to the second section where the signature bit of the piece is with some really interesting meditative sound collage. Composer: François Bayle. Piece: Tremblement de terre très doux (1978) which is part of a larger group of works entitled Erosphere.