Edison's first sound recordingIn 1877, Thomas Edison demonstrated the first sound recording, reciting “Mary had a Little Lamb” at his Menlo Park Laboratory, making the first surviving recording of the human voice. (The word “Halloo” may have been recorded in July on an early paper model derived from his 1876 telegraph repeater, but the paper has not survived). John Kruesi built this first practical machine 1-6 Dec, from a sketch given to him by Edison that was made 29 Nov (not on “Aug. 12” that Edison mistakenly wrote on another sketch in 1917). When Kruesi heard Edison's first words 6 Dec, he exclaimed “Gott in Himmel!” (“God in Heaven”). Edison was granted patent 200,521 on 19 Feb 1878.