On this day in music history: February 19, 1878 - Inventor Thomas Edison is awarded U.S. Patent No. 200,521 for his invention the phonograph by the U.S. Patent Office. Edison develops the phonograph with mechanic John Kreusi as an off shoot of his ongoing research in telegraphy and telephony. Having previously created a method of recording Morse code by indenting the communications on a roll of paper, the phonograph uses a similar method, using an embossing point (a stylus) and speaking into the diaphragm while revolving a metal cylinder covered with a sheet of tin foil (paraffin paper is used in the initial experiment to capture the sound. The first demonstration of Edison’s phonograph takes place in December of 1877. Edison recites the nursery rhyme “Mary Had A Little Lamb”, while hand cranking the cylinder, and recording his voice on to the tin foil sheet. Though his rival Alexander Graham Bell, chemist Chichester Bell (Bell’s cousin), and fellow inventor Charles Tainter makes marked improvements on the phonograph by creating the cardboard wax cylinder and a more advanced cutting method to record sound, Edison is widely acknowledged as the primary inventor. The phonograph establishes Edison’s reputation as an innovator, leading the public and the press to label him “The Innovator Of The Age” and “The Wizard Of Menlo Park”. Thomas Edison’s original phonograph is on permanent display at the National Museum Of American History at the Smithsonian Institution in Washington DC.