Tracklist:

1. Preludes In Quarter-Tone System, I
2. Preludes In Quarter-Tone System, IV
3. Preludes In Quarter-Tone System, V
4. VIII
5. IX
6. Preludes In Quarter-Tone System, XIV
7. Preludes In Quarter-Tone System, XVII
8. Preludes In Quarter-Tone System, XVIII
9. Preludes In Quarter-Tone System, XX
10. Preludes In Quarter-Tone System, XXI
11. Preludes In Quarter-Tone System, XXIII
12. Preludes In Quarter-Tone System, XXIV
13. Three Quarter-Tone Pieces For Two Pianos, Largo
14. Three Quarter-Tone Pieces For Two Pianos, Allegro
15. Three Quarter-Tone Pieces For Two Pianos, Chorale
16. Three Page Sonata
17. Étude Sur Le 'carré Magique Sonore', Op. 40