Mary Had a Little Lamb

On December 6, 1877, in his Menlo Park laboratory, Thomas Edison wrapped tinfoil around a metal cylinder, adjusted a needle attached to a diaphragm, turned a hand crank, and recited into a mouthpiece. When he moved the needle back and cranked again, a tinny version of his voice emerged: "Mary had a little lamb." The first time a human voice was recorded and played back. Sound became permanent.

Edison called it a phonograph. Sound waves are vibrations in air. Those vibrations could be inscribed as physical grooves. Reversing the process recreated them. The fidelity was poor. Recordings degraded with each play. But it worked.

Edison wasn't first to think about recording sound. In 1857, Edouard-Leon Scott de Martinville created the phonautograph, which traced sound waves onto soot-coated paper but couldn't play them back. Edison's breakthrough was the full loop: capture, storage, and playback. He demonstrated it publicly the next day at Scientific American's offices, causing a sensation.

edison's tinfoil phonograph, 1878 — the device that made sound permanent. source: wikimedia commons

Edison envisioned the phonograph as a dictation tool. The market disagreed. By the 1890s, phonographs were home entertainment devices. The recording industry was born from what people wanted, not from Edison's vision. Before the phonograph, music was live or it didn't exist. Afterward, a performance could happen once and be heard thousands of times. Music became reproducible, distributable, archivable.

"Mary had a little lamb" was trivial. Edison recorded the first thing that came to mind. That mundanity is the point. The phonograph made every moment recordable. After December 6, 1877, the voice was no longer tied to the body.