What kind of instrument was Leonardo da Vinci’s viola organista?

Leonardo da Vinci’s viola organista was a keyboard string instrument. It combined a keyboard with moving wheels or bows that rubbed strings, producing sound when keys selected the notes.

Leonardo designed the instrument in the late fifteenth century, with drawings appearing in manuscripts including the Codex Atlanticus. The player could use a keyboard much like an organist, but the sound-producing mechanism worked more like a bowed string instrument than a conventional pipe organ.

The name can cause confusion because “organista” suggests an organ. Leonardo’s concept did not rely on pipes and air. Instead, a rotating friction mechanism contacted strings, allowing sustained tones under keyboard control.

No authenticated original instrument survives. Modern builders have produced reconstructions from Leonardo’s drawings, and recordings show that the idea can work in practice. It belongs to a long history of experimental keyboard instruments that sought to combine the expressive sound of strings with the controllability of keys.