He invented a device called the phonautograph, and, on 9 April 1860, recorded someone singing the words, 'Au clair de la lune, Pierrot repondit .'
He invented a device called the phonautograph, and, on ngày 9 tháng 4 năm 1860, recorded someone singing the words, 'Au clair de la lune, Pierrot repondit .'