Gesang der Jünglinge "complexes" structured statistically . The last category occurs in Stockhausen's electronic music for the first time in "Gesang der Jünglinge", and originates in the course of studies Stockhausen took between 1954 and 1956 with Werner Meyer-Eppler at the University of Bonn. The text of "Gesang der Jünglinge" is from a Biblical story in The Book of Daniel where Nebuchadnezzar throws Shadrach, Meshach, and Abednego into a fiery furnace but miraculously they are unharmed and begin to sing praises to God. This text is presented in a carefully devised scale of seven degrees of comprehensibility, an idea which also came from
Shadrach in the Furnace as his. Then, they return home to rest, where Katya randomly and suddenly warns Shadrach to be careful. Nikki Crowfoot grows increasingly distant from him, and Shadrach is unable to discover why. He visits Genghis Mao and informs the dictator of an aneurysm he detected in the dictator's abdominal aorta. The news annoys Genghis Mao, since he is preparing a colossal funeral for Mangu which he refuses to delay. Shadrach has lunch with Katya, who reveals to him that, on the night before his death, she informed Mangu that he was chosen as the Avatar subject. Katya tells Shadrach that