Rockabilly is one of the earliest styles of rock and roll music, and emerged in the early 1950s. The term rockabilly is a portmanteau of rock (from rock 'n' roll) and hillbilly, the latter a reference to the country music (often called hillbilly music in the 1940s and 1950s) that contributed strongly to the style's development. Other important influences on rockabilly include western swing, boogie woogie, and rhythm and blues. While there are notable exceptions, its origins lie primarily in the Southern United States. Artists such as Bill Haley, Buddy Holly, Carl Perkins, Gene Vincent, Eddie Cochran, Chuck Berry and others were the founders of the style. During earliest 1990's rockabilly gets popular in Russia.
   JACKKNIFE Rockabilly Trio was formed in 2001 in Rostov-on-Don - the "capitol" of Russian South.