A man once made a movie of people going to the moon. He wished that people could hear what his characters. Well a man called Thomas Alva Edison made the first sound machine. It recorded the kid song “Mary had a little lamb.” Thomas called his machine the photograph. So the machine worked when you put tin foil around a cylinder and turn a handle. You shout as loud as you can into a tube. When you play it back you can hear a faint voice. After the foil was taken off it would no longer work. Later on someone made the same thing but with wax instead of foil. They would plug in a type of earbuds in and listen to the music. Someone else thought “Well what if we put this in a box, put a nickel in and I can listen to music?”