The Diary of Mr. Gray, conceived as a rock play set in the 1920's, revolves around a
psychiatrist who is reading the diary of Mr. Gray, presumably his patient. Mr. Gray had gone mad as a result of drug use. Through the diary, we see the world through the eyes
of a madman. The album covered 50 years of the recording industry, including a 78 rpm, a stereo recording, and a quadraphonic recording. The album is now a cult classic.
Yank Barry, the vocalist, produced the first quadraphonic album at Regent Sound Studios in New York. He went on to become one of the world's leading philanthropists, along with his friend and partner Muhammad Ali, and has been the recipient of countless Humanitarian Awards.