内容摘要：Musical instruments have been around for at least 37,000 years in countless types, varieties, and cl

Musical instruments have been around for at least 37,000 years in countless types, varieties, and classifications, all with one goal: creating sound waves. And yet most instruments have remained relatively unchanged throughout their histories; in fact, painstaking efforts are often taken to make sure machines are built to centuries-old specifications.

But some do eschew conventional processes to create truly unique sonic experiences. Organs that harness the tide or are built from stalactites, a secret Lullaby Factory, and a bass that plays notes so low humans can’t hear them exemplify an even wider scope of musical innovation. Here are 19 of the most wonderfully unusual instruments around the globe.