A music box is a mechanical device that uses the rotational movement of a cylinder to produce music. Most commonly, it was powered by a wind-up spring.
The cylinder—typically made of metal—featured precisely arranged protrusions that represented musical notes and tones. These tiny bumps were strategically positioned so that, at the right moment, they would "pluck" a finely tuned metal reed, creating its signature resonant sound.
Music boxes were often intricately decorated and used as musical jewelry cases or ornamental household pieces. Their enchanting melodies and meticulous craftsmanship made them popular gifts in the past, and today they are cherished collector’s items.