This term refers to a variety of broken voice, high pressure, glottal (or other) singing techniques not typically used in Western bel canto singing. The traditional throat-singing practice called xöömei is most commonly associated with the Republic of Tuva (Russia) and Western Mongolia (where it is called höömii) and refers to a number of solo-voice drone singing techniques involving the production of reinforced harmonics or overtone melodies. Related throat-singing styles are practiced in the Republics of Altai (kai) and Xakassia (xai), Bashkortostan (özläü), and in other parts of Central Asia under different names. Other styles, such as umngqokolo singing of the Xhosa in South Africa involve different techniques for voice production and overtone manipulation. Some vocal practices referred to as throat-singing do not produce overtones per se, such as katajjaq throat games indigenous to the Inuit peoples of Arctic Canada as well as rekuhkara of the Ainu peoples in Hokkaido, Japan.