Before designing the cover, Yokoo listened to a tape of the concert, meditated, and thought about his reading of Raymond W. Bernard's 1969 book "The Hollow Earth"; critics thought he had been inspired instead by the psychedelic drugs popular at the time.
Yokoo listened to a tape of the concert. Yokoo meditated. Yokoo thought about his reading of Raymond W. Bernard's 1969 book "The Hollow Earth". Yokoo was designing the cover. Critics thought. He had been inspired instead by the psychedelic drugs popular at the time.