A music box is a kind of mechanical musical instrument that has long been not only a means of playing melodies, but also an interior decoration. The principle of operation of all models is the same: inside the acoustic box, steel plates are arranged in the desired sequence, differing in thickness - they form a scale. Turning the crank manually or winding the box with a key, the rotating part of the mechanism, equipped with pins, touches the plates, giving rise to enchanting sounds.
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