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A 10-second recording of a singer performing the folk song Au Clair de la Lune is made in Paris, France, Europe, by Edouard-Leon Scott de Martinville, on his invention the phonautograph, a machine designed to record sounds visually, in soot on a glass surface, but incapable of playing the sounds back. Playback of this recording will not be effected until 2008 by a group of American audio historians. It is nevertheless, the first documented recording of a human voice.