| Date of composition | 1957 |
| Premiered | 1957, May 24th in Milan, Metropolitan City of Milan, Italy |
| First published | Edizioni Suvini Zerboni |
| Approx. duration | 7 minutes |
| Instruments | Magnetic tape |
| Autotranslations beta |
Luciano Berio: Perspectives Luciano Berio: Perspectives Luciano Berio: Perspectives |