Throat singing is one of the world’s oldest and most unique styles of music. It’s performed in Central Asia, northern Canada and Alaska, and in South Africa, and it allows the performer to sing two or more notes at the same time.
Here is an interesting video from the Smithsonian Institute showing Tuvan throat singing, called Khöömei. Tuva is a rural area of Russia, located to the northwest of Mongolia. Unfortunately, it can’t be embedded, but the video is worth a click.