First version (1974):
Spatial composition for 6 groups of instruments and 13 tapes
Unlimited time
Manuscript and tapes by the composer
First performance: 12th October 1974, Graz, Eggenberg Castle, Pro Arte Ensemble
Commission: Österreichischer Rundfunk, Graz
Second version (1984):
Spatial composition for 13 group of instruments, 5 voices and 13 tapes
Unlimited time
Manuscript and tapes by the composer
First performance: 23rd September 1984, Strasbourg, Rohan Palace, Musica Festival