From the days of early acoustic recording where music traveled through a cone to be etched into wax to the digital devices in use today, audio technology has grown from an impossible dream to devices that fit countless songs in our pockets. This resource will take you and your middle school or high school students through history to learn about the early days of audio technology, Thomas Edison's cylinder phonograph, Victrolas, early microphone technology, magnetic tape recording, Compact Discs,