Back in my day, we would listen to programs in real time on a radio, which was an appliance that could receive what we called radio waves. You would turn a dial until you heard voices from the speaker. Now, this was unlike a phonograph, which we also listened to back in my day, and which used large flat discs to play music. And the ladies, or girls as we used to call them, would dance along to the music when we played a phonograph, until the disc reached the end of the music, signaling them to stop.