Zero voicemails would be FINE with us. But in a world without recorded sound, we'd miss our podcasts 🎧, playlists 🎷, the play-by-play on sports radio ⚽, and the "ping!" of new text messages 📱. When people heard this device play recorded sound in the 1870s, they were ASTONISHED. It's Thomas Edison's Tinfoil Phonograph and it's the earliest machine for recording and playing back sound. See this an other audio objects in our "America's Listening" display, opening Friday, October 19 in the Ray Do