The disc was originally made to go inside a talking doll, and was invented by none other than the father of the phonograph, Thomas Edison.
In the recording, a woman recites the first verse of “Twinkle, Twinkle Little Star.” It is believed that the women hired to be the voices of the dolls could be the first people ever paid to do voice work, making them the first recording artists.
Warped beyond the point of use, the disc was discovered at the Thomas Edison National Historical Park. The audio was reconstructed using a three-dimensional optical scanning method that reproduced the sound by analyzing grooves in the disc and storing it as a WAV file.
Listen to the recording at the National Park Service’s Web site here.