The viola organista is a musical instrument that was designed by Leonardo da Vinci, but never built in his lifetime. It combines the features of a string instrument and a keyboard instrument, using a friction belt to vibrate the strings when the keys are pressed. The instrument has intrigued musicians and inventors for centuries, but only a few modern replicas have been made based on Leonardo’s sketches.

One of the most successful replicas was built by Sławomir Zubrzycki, a Polish pianist and constructor, who completed his project in 2012 after four years of work. Zubrzycki’s viola organista has four bow-wheels that are spun by a foot-pedal, 49 keys, and a range of four octaves from F1 to F5. He has performed with his instrument in various concert halls and music festivals across Europe, introducing the unique sound of the viola organista to the public.

The viola organista is an example of Leonardo’s genius and creativity, as well as his interest in combining art and science. The instrument is also a testament to the perseverance and passion of Zubrzycki, who brought Leonardo’s vision to life after five centuries. The viola organista is a rare and fascinating musical invention that deserves more attention and appreciation from the world.