Compact Disc 15 (single CD)Compact Disc 15 (single CD)
| Spiral | work number 27 | 1968 |
| Harald Bojé | recorded March 1971 WDR | 16'22" |
| Spiral | work number 27 | 1968 |
| Peter Eötvös | recorded March 1971 WDR | 14'31 |
| Pole | work number 30 | 1970 |
| Harald Bojé & Peter Eötvös | recorded March 1971 WDR | 22'17" |
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