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"Traces the development of sound technology in the U.S. and Europe from the first demonstration of the phono-autograph in 1857 to the latest MP3 technology. Morton skillfully blends a basic understanding of the physical principles involved in recording sound waves with an interesting chronological account that examines the cultural and economic issues affecting the development of sound technology... Written in an engaging style for general readers and includes references to primary and scholarly resources for readers who want to learn more."