| Librettist | (Carlos Franqui and Ernesto “Che” Guevara.) |
| Date of composition | 1970 (1969-1970) |
| Premiered | 1970, March 21st in Rome, Metropolitan City of Rome, Italy |
| First published | Ricordi |
| Approx. duration | 32 minutes |
| Instruments |
3x
Voice (Soprano)
Chorus/Choir 3x Actor 3x Electronics |
| Autotranslations beta |
Luigi Nono: Y entonces comprendió Luigi Nono: Y entonces comprendió Luigi Nono: Y entonces comprendió |