Listen to the instrument da Vinci invented but never got to hear

It’s startling to think of the multitude of objects Leonardo da Vinci conceptualized, and it’s a tad heartbreaking to realize he saw so few of them actualized. But nearly 500 years after da Vinci sketched his plans for a musical instrument he dubbed the Viola Organista, Polish concert pianist Slawomir Zubrzycki spent more than 5,000 hours making da Vinci’s idea a reality.