Voice – Alain Neffe (tracks: 2-10), Isabelle Yernaux (tracks: 1-12 to 1-14, 1-18 to 1-20, 1-27, 1-30), Mirella Brunello (tracks: 1-1 to 1-5, 1-7, 1-8, 1-10, 1-15 to 1-17, 1-21 to 1-24, 1-26, 1-28, 1-29, 2-1 to 2-4, 2-6 to 2-9), Nadine Bal (tracks: 1-9, 1-11), Tina Scatozza (tracks: 1-6, 1-25, 2-5)
Notes
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.