Rockers are members or followers of a biker subculture that originated in the United Kingdom during the late 1950s and was popular in the 1960s. It was mainly centred on motorcycles and rock 'n' roll music. By 1965, the term greaser had also been introduced to Great Britain and, since then, the terms greaser and rocker have become synonymous within the British Isles, although used differently in North America and elsewhere. Rockers were also derisively known as Coffee Bar Cowboys. Their Japanese counterpart was called the Kaminari-Zoku.

Rockabilly is one of the earliest styles of rock and roll music. It dates back to the early 1950s in the United States, especially the South. As a genre it blends the sound of Western musical styles such as country with that of rhythm and blues, leading to what is considered "classic" rock and roll. Some have also described it as a blend of bluegrass with rock and roll. The term "rockabilly" itself is a portmanteau of "rock" and "hillbilly", the latter a reference to the country music that contributed strongly to the style. Other important influences on rockabilly include western swing, boogie-woogie, jump blues, and electric blues.