[4][5] Kozachok is a fast, linear, couple-dance in 24 time, typically in a constantly increasing tempo and of an improvisatory character.
[6] In terms of music, Kozachok is in fact a group of "Kozachok-type dances", with numerous regional varieties, especially in Carpathians, under different names: "Kozak", "Haiduk", "Dzhuman", "Metanka", etc.
Kozachok-type dances play the function of "dance-songs" (танець-приспівка) in most of ethnic Ukrainian lands, with the exception of "kolomyika" regions (Pokuttia, Boiko Subcarpathians, and Halychyna).
[citation needed] Historically these regions had an important Ukrainian population which was significantly reduced in the Soviet era.
[7] The first known musical arrangement of the kоzachok for lute is attributed to the Polish nobleman and composer Kazimierz Stanisław Rudomina-Dusiacki in the 17th century.