| Dated: | 1977 |
| Instrumentation: | Soprano (or mezzo-soprano) and 8 musicians: flute (+pic, +alto flute), clarinet (+bass clarinet), piano, 2 violins, viola, cello and double bass |
| Timing: | 11' |
| Premiere: | June 17, 1977 in Strasbourg, performed by the Ensemble Studio 111 |
| Dedicated to: | |
| Commissioned by: | |
| Published: | Editions Salabert 17347 |
| Phonemic text by Iannis Xenakis. Recordings available from Wergo WER 6178-2 and Mode 53 |