A thousand years ago, Gaelic monks sang and chanted inside Iceland’s vast series of caves. Recently, a group of folk singers made the trek inside one of these caves to test out the acoustics. Here’s what it sounded like.
There is no question that the human voice is a remarkable musical instrument, but few singing styles hit that point home as well as overtone singing — commonly known as throat singing —does. And it’s incredible to hear and watch multiple pitches coming out of a single mouth.
What singer Anne-Maria Hefele is performing is a style of overtone singing, and it's one of the most otherworldly sounding things I've ever heard. The whole thing is worth a watch, but the part at 3:25, where she moves the fundamental and overtone in opposite directions, had me shaking my head in disbelief.