The various prayer gestures are used as timbres and tempos. That is when the whole event, audience included, is elevated into an almost trance-like awareness of communion with the Great Spirit . I have often been accused of vague mysticism. These days, mysticism is easily misunderstood as something vague. The purest musicality is also the purest mysticism in a modern sense.
Mysticism is a very incisive capacity to see right through things.
To this end, the intellect is a piece of equipment that serves intuition. Intuition, clearly, is not innately present in man, but constantly infiltrates him, like the rays of the sun. The complete set-up is explained in the CD booklet. This has to do with the way Stockhausen composed the variable strength of the dynamics of the orchestra in such a way that the fewer musicians who play, the softer the music gets. This also gives the music of the orchestra a spatial effect, as a crescendo moves from the outer edges into the middle, and a decrescendo in turn moves the other way, from the middle on out.