| Dated: | 1986 |
| Instrumentation: | Ensemble of 15 musicians: 1 (+pic), 1,2 (+bass clarinet, +clarinet in c), 1 (+contra bassoon) - 1,1,1,1, harp, strings (1,1,1,1,1) |
| Timing: | 15' |
| Premiere: | January 26, 1987 at the Theâtre de la Ville in Paris, for the 10th anniversary of the Ensemble InterContemporain. Perormance by the Ensemble InterContemporain, conducted by Pierre Boulez |
| Dedicated to: | Ensemble InterContemporain and Pierre Boulez |
| Commissioned by: | Ensemble InterContemporain |
| Published: | Editions Salabert 18501 |
| Recordings available from Erato 2292-45770-2, 8573-84254-2 and 4509-98496-2, Caprice CAP 21581 and Salabert SCDP 020. |