Rockabilly is a subgenre of rock and roll that originated in the American South in the early 1950s. It's a blend of country, swing, boogie woogie, and rhythm and blues, and is sometimes described as a mix of bluegrass and rock and roll. The term "rockabilly" is a combination of "rock" and "hillbilly", a term used in the 1940s and 1950s to refer to country music.