| Dated: | 1981 |
| Instrumentation: | Mixed choir of 80 voices (or 54 minimum) and orchestra of 98 musicians: 4 (+pic), 4,4,4 (+contrabassoon) - 6,4,4,1, timpani, 3 percussionists, 2 harps, piano, strings (16,14,12,10,8) |
| Timing: | 26' |
| Premiere: | March 26, 1982 in Cologne (Germany), performed by the Kölner Rundfunk-Sinfonieorchester, conducted by Michel Tabachnik |
| Dedicated to: | |
| Commissioned by: | |
| Published: | Editions Salabert 17544N |
| Phonemic texts, as well as text fragments from Siebenkäs by Jean-Paul Richter and Écoute by Françoise Xenakis |