Harmonics is singing several notes at once (up to 3 notes, 2 being more common). This very special music comes from the shamanic traditions of the world. Many shamanic cultures throughout the world have used this droning voice that creates clearly audible overtones above the main tone. Some Native American sources call it Spirit Voices. The Tibetan Buddhists have also perfected this type of singing, sounding notes an octave below the bass tone. In North America, the Inuit culture has a similar technique called ‘throat chanting’. Up close, face to face, a couple of Inuit Throat Singers will make throat like sounds often imitating animals. These sounds bouncing off one another create complex overtones.