Barrel organ

A barrel organ is a musical instrument that plays music by turning a big cylinder (like a can), that has little bumps on it. When the bumps on the cylinder go over little levers, it makes a sound. Think of it like going over bumps in the road and your car making a noise.

The barrel organ can play different tunes depending on what bumps are on the cylinder. Sometimes people can change the cylinder so the organ can play different songs.

To make the cylinder spin, a person has to turn a handle. This makes the cylinder spin and the bumps play the music.

The barrel organ can be played by anyone, but it was originally used by street musicians to entertain people on the streets. It's like having a mini orchestra in a box!