First sound ever recorded (1860)
This is the first sound ever recorded, by Édouard-Léon Scott de Martinville, in 1860, before Edison's wax cylinder experiments. Ironically, the "phonautograph" was designed only to record sounds, not to play them back.
The 10 seconds ghostly voice is a woman singing "Au Clair de la Lune".
via NY Times http://www.nytimes.com/2008/03/27/arts/27soun.html?_r=1&ex=1364356800&en=14b6cec0c2c873bf&ei=5090