The Tyva Republic (Russian: Респу́блика Тыва́, tr. Respublika Tyva; IPA: [rʲɪˈspublʲɪkə tɨˈva]; Tuvan: Тыва Республика, Tyva Respublika), or Tuva (Russian: Тува́), is a federal subject of Russia (a republic). It lies in the geographical center of Asia, in southern Siberia. The republic borders with the Altai Republic, the Republic of Khakassia, Krasnoyarsk Krai, Irkutsk Oblast, and the Republic of Buryatia in Russia and with Mongolia to the south. Its capital is the city of Kyzyl. Population: 307,930 (2010 Census).

Forests, mountains, and steppe make up a large part of the geography.

A majority of the people are Tuvans who speak the Tuvan language, but Russian is also spoken extensively. Tuva is governed by the Great Khural which elects a chairman for a four-year term. The current chairman is Sholban Kara-ool.

The republic is situated in the far south of Siberia. Its capital city of Kyzyl is located near the geographic "center of Asia". The eastern part of the republic is forested and elevated, and the west is a drier lowland.

David Michael Letterman (born April 12, 1947) is an American television host and comedian. He hosts the late night television talk show, Late Show with David Letterman, broadcast on CBS. Letterman has been a fixture on late night television since the 1982 debut of Late Night with David Letterman on NBC. Letterman recently surpassed friend and mentor Johnny Carson for having the longest late-night hosting career in the United States of America.

Letterman is also a television and film producer. His company Worldwide Pants produces his show as well as its network follow-up The Late Late Show with Craig Ferguson. Worldwide Pants has also produced several prime-time comedies, the most successful of which was Everybody Loves Raymond, currently in syndication.

In 1996, David Letterman was ranked #45 on TV Guide's 50 Greatest TV Stars of All Time.

Letterman was born in Indianapolis, Indiana. His father, Harry Joseph Letterman (April 1915 – February 1973), was a florist of British descent; his mother Dorothy Letterman (née Hofert, now Dorothy Mengering), a Presbyterian church secretary of German descent, is an occasional figure on the show, usually at holidays and birthdays.

Sainkho Namtchylak (born 1957) is a singer originally from Tuva, a small autonomous republic in the Russian Federation just north of Mongolia. She is known for her Tuvan throat singing or Khöömei.

Sainkho Namtchylak is an experimental singer, born in 1957 in a secluded village in the south of Tuva. She has an exceptional voice, proficient in overtone singing; her music encompasses avant-jazz, electronica, modern composition and Tuvan influences. In Tuva, numerous cultural influences collide: the Turkic roots it shares with Mongolia, Xinjiang Uighur and the Central Asian states; various Siberian nomadic ethnic groups, principally those of the Tungus-Manchu group; Russian Old Believers; migrant and resettled populations from the Ukraine, Tatarstan and other minority groups west of the Urals. All of these, to extents, impact on Sainkho's voice, although the Siberian influences dominate: her thesis produced while studying voice, first at the University of Kyzyl, then in the Gnesins Institute in Moscow during the 1980s focussed on Lamaistic and cult musics of minority groups across Siberia, and her music frequently shows tendencies towards Tungus-style imitative singing.

Kongar-ol Ondar (Tuvan: Ондар Коңгар-оол) is a master Tuvan throat singer and a member of the Great Khural of Tuva. Ondar was born in 1962 near the Khemchik River in western Tuva. Considered a living treasure by the Republic of Tuva, Ondar is granted a stipend and an apartment for the musical skills he possesses. Jovial and personable, Ondar is probably the best-known face of khöömei (Tuvan: хөөмей) throat singing to Westerners, appearing on the Late Show with David Letterman and in interviews for CNN and other networks.

In the Central Asian tradition of self-fulfilling child naming, Kongar-ol literally translates to "loud boy."

Ondar is also known outside Tuva for inviting American blues musician Paul Pena to Tuva. Pena, who had learned throat singing before coming to Tuva, was the subject of the documentary Genghis Blues in which Ondar was also featured.

He also appears on the Béla Fleck and the Flecktones albums Outbound, album/DVD Live at the Quick, and Jingle All the Way. He released one album on Warner Bros. Records titled Back Tuva Future.