I became aware of Tony Schwartz's work during my days as a graduate student at Simon Fraser University. His book The Responsive Chord (originally printed in 1972,) was required reading. It also became an inspiration.
Tony Schwartz was called by the NYT the "king of sound." He pioneered new methods of communication through sound that revolutionized the advertising, political and educational worlds. At the time of the publishing of his book, Marshall McLuhan said about it that "this is a totally untouched field and Tony Schwartz has a monopoly in this area."
Steve Peters interviewed Schwartz in 1985 and this interview remained as a draft since then. Peters now decided to publish it. Check here for this amazing document.