He plays synthesizers, rhythm boxes, sound effects and writes lyrics, which can best seen as poetry; recited by various women, in French.
Most of the tracks were recorded (and mixed) directly on an open-reel tape machine between 1974 and 1982 in an attic in Marchienne-au-Pont and in a cave in Fopntaine-l'Évêque, Belgium.
All the tracks of CD1 were previously released on cassette or LP compilations in the 80s.
All the tracks of CD2 are unreleased, except CORTEX O.