This guy's style of musical performance is simply mesmerizing. But this interesting "instrument" certainly isn't the first of its kind; in fact, the Smithsonian has one very similar. German scientist Ernst Chladni made huge strides in the study of acoustics in the 18th century. During some of his experiments, Chladni invented a mechanism that produced visualizations of vibrations. Referred to as "Chladni's Plates," these devices were incredibly popular, with many people attending Chladni's public demonstrations. Like the man in this video, Chladni used sand on top of a flat surface to create his patterns. He even managed to craft a formula that would accurately predict what patterns would be created from certain movements and sounds.