Leonardo da Vinci designed a mechanical drum that could produce music automatically with rotating drums.
The instrument used cylindrical drums fitted with pegs. As the drums turned, the pegs struck or activated parts of the mechanism, creating rhythmic sounds. The design could be mounted on a cart and operated by turning a crank, linking movement to musical performance.
This idea belongs to Leonardo’s experiments with automation and mechanical entertainment. It was not an electronic instrument and did not record sound. Instead, it used preset physical positions, much like later pinned cylinders in mechanical musical instruments.
The drum is sometimes grouped with Leonardo’s automata, including his famous mechanical lion and robot knight. Those machines served different purposes: the drum made music, while the others demonstrated programmed motion or theatrical effects.