[throat-singing, chant biphonique, chant diphonique, höömii]
A vocal style in which a single performer produces more than one clearly audible note simultaneously. In melodic overtone-singing styles, a drone is produced on the first harmonic or fundamental and a flute-like melody created from a series of upper harmonics or overtones. In non-melodic styles, overtones may occur because of the pitch of the fundamental drone combined with the vocal sounds being enunciated, for instance when Mongols sing the bass overtone-singing style harhiraa höömii or Tibetan dge lugs pa monks in Gyume and Gyütö monasteries chant using a profound bass in the chest register. Overtone-singing may also comprise a rich tapestry of harmonics without the presence of a drone.
Myths of origin vary. Tuvans believe that overtone-singing originates in lullabies sung by women dating back to the time when humans first inhabited the earth, or that it originates in the environment; Khalkha Mongols cite musical communications between natural phenomena and the effects of such sounds on humans. Both Tuvans and Mongols generally refute connections posited by Europeans of its relationship with Shamanism, Buddhism or the jew's harp. Given their beliefs about the spirits of nature, however, overtone-singing may traditionally have been linked to folk-religious practices....