Side One:

1. L'Éthique (6:21)
2. Première Variation (1:34)
3. Greenland (5:51)
4. Interface (6:18)

Side Two:

5. Interface (2e Partie) (2:02)
6. Southbound (6:36)
7. Marie Virginie C. (3:33)

Side Three:

8. Iceland (Part 1 + 2) (10:44)
9. Deuxième Variation (2:04)
10. Dedicated To K.C. (6:53)

Side Four:

11. The Western Wall (1re Partie) (7:45)
12. Les Soucoupes Volantes (1978)
13. Rhizosphère (Extrait) (6:03)
14. The Western Wall (2e Partie) (4:29)

Songs on this compilation are from the following :
1, 10, 11 & 14 - L'Ethique, 1982
2 & 9 - Chronolyse, 1978
3 & 8 - Iceland, 1979
7 - Un Rêve Sans Conséquence Spéciale, 1976
12 - Interface, 1977
13 - Rhizosphére, 1977

Tracks 4, 5 and 6 were recorded at Le Palace in Paris, France in 1978.
Tracks 4 and 5 were released on the Interface CD reissue.
Track 6 was released on the L'Ethique CD reissue.