A component part of the opera Donnerstag aus Licht, it may also be performed as an independent composition, in which form it is designated "ex 49" in the composer's catalog of works (where Nr.
He personifies a divine spirit capable of achieving immortality and absolute knowledge, who discovers beyond death a supraconsciousness that protects him from the anti-knowledge of Lucifer.
The Invisible Choirs represent the divine immanence, disembodied and beyond logic, activated like a mantra that forces Michael into transcendence.
[2] deliberately selecting the "positive, creative, and invigorating" passages[3] and avoiding the "gruesome" segments that "describe drastic things, that speak of blood and destruction".
This was used to synchronise the choir, who were recorded separately by sections, with each voice group (sopranos, altos, tenors, and basses) superimposed on itself as many as four times.