Contents
1. Variations I (1958) – version 1 5:56
2. Variations II (1961) – version 1 1:02
3. Variations II (1961) – version 2 0:59
4. Variations I (1958) – version 2 2:05
5. Variations II (1961) – version 3 1:04
6. Variations II (1961) – version 4 0:58
7. Variations III ( 1963) 4:20
8. FOUR6 (1992) 29:58