Mechanical music refers to music produced by devices that operate without human intervention. These devices, such as music boxes, player pianos, and mechanical organs, use various mechanisms like gears, levers, and pins to create sound. They often rely on pre-programmed tunes stored on physical media, such as punched paper rolls or metal discs. The history of mechanical music dates back to the 18th century, with early examples like automaton musicians and barrel organs. Over time, these inventions evolved, leading to more complex machines that could play a wider range of music. Today, mechanical music remains a fascinating blend of art and engineering.