The Amazing Body: How Tuvan throat singers make their oddly beautiful music - the video and the detailed explanation. Sometimes the throat singers sing in two voices at once, a feat that leaves one wondering, "How did they do that?" Here's how:

Singers draw on organs other than the vocal folds to generate a second raw sound, typically at what seems like an impossibly low pitch. Many such organs are available throughout the vocal tract. Kargyraa utilizes flexible structures above the vocal folds: the so-called false folds (paired tissues that occur directly above the true folds and are also capable of closing the airstream); arytenoid cartilages (which sit in the rear of the throat and, by rotating side to side and back and forth, help to control phonation); aryepiglottic folds (tissue that connects the arytenoids and the epiglottis); and the epiglottic root (the lower part of the epiglottic cartilage).

The man who wrote Jet Airliner taught himself to sing like a Tuvan and won a Tuvan throat singing contest - in Tuva! The video of his journey is not to be missed.