At first listen, the grainy high-pitched warble coming from the speakers may not sound like much. But scientists say a recently discovered French recording from 1860 is the oldest known recorded human voice.
The 10-second clip of a woman singing the song “Au Clair de la Lune” taken from a so-called phonautogram was recently discovered by Grammy-winning audio historian David Giovannoni. The recording predates Thomas Edison’s “Mary had a little lamb” — previously credited as the oldest recorded voice — by 17 years.