 This version of the "I Ching" was the first complete English translation and had been published by Wolff's father, Kurt Wolff of Pantheon Books in 1950.The "I Ching" is commonly used for divination, but for Cage it became a tool to compose using chance.To compose a piece of music, Cage would come up with questions to ask the "I Ching"; the book would then be used in much the same way as it is used for divination.