Au Claire de la Lune

The oldest recording of the human voice - made 17 years before Thomas Edison invented the phonograph - has been discovered and played back by audio researchers.

The 10-second recording is of a person singing a snippet of a French folk song, 'Au clair de la lune', and was recorded on April 9, 1860 by Parisian inventor Édouard-Léon Scott de Martinville.