Phonautograph - Wikipedia

What is the oldest piece of music on record? - Quora

What was the first music recording that people could go to the shop and buy a copy of? Was it even a gramophone record, or was it some kind of wax cylinder

What is the oldest audio recording? - Quora

Precision Audio & Home Entertainment

What is the oldest song known to man? - Quora

What was the first sound recording to be made commercially available? - Quora

The Phonautograph: A Brief History

Digital Phonograph Stylus - Physical Computing - Snap! Forums

Music - Crystalinks