The Closed Corporation
Satanist rock band that traveled to the Bavarian city of Ingolstadt to participate in the Walpurgisnacht rock festival in the 1975 novel Leviathan, the third book in Robert Anton Wilson’s insane Illuminatus! trilogy.
The Closed Corporation was generally recognized to be the most esoteric and experimental of all rock groups; this was why their following, although fanatical, was relatively small. "It's heavy, all right," most of the youth culture said, "but is it really rock?" The same question, more politely worded, had often been asked by interviewers, and their leader, Peter "Pall" Mall, had a standard answer: "It's rock," he would say somberly, "and on this rock I will build a new church." Then he would giggle, because he was usually stoned during interviews. (Reporters made him nervous.) In fact, the religious tone was rather prominent when the Closed Corporation appeared in concert, and the chief complaint was that nobody could understand the chants that accompanied some of the more interplanetary chords they employed. These chants derived from the Enochian Keys which Dr. John Dee had deciphered from the acrostics in the Necronomicon, and in modern times had been most notably employed by the well-known poet Aleister Crowley and the Reverend Anton Lavey of the First Church of Satan in San Francisco. On the night of April 30 the Closed Corporation ritually sacrificed a rooster within a pentagram (it gave one last despairing crow before they slit its throat), called upon the Barbarous Names, dropped a tab of mescaline each, and departed for the concert grounds prepared to unleash vibes that would make even the American Medical Association turn pale with awe.
The name is likely a reference to a 1968 nonfiction book of the same title by James Ridgeway.