"Rockabilly" usually (but not exclusively) refers to the type of rock and roll music which was played and recorded in the mid-1950s primarily by white singers such as Elvis Presley, Carl Perkins, Johnny Cash, and Jerry Lee Lewis, who drew mainly on the country roots of the music.came out of the black rhythm and blues tradition, making the music attractive to white audiences, and are not usually classed as "rockabilly".
By 1954, as rock and roll was beginning to emerge, a number of similar acts began to cross over from the R&B charts to mainstream success, often with added honking brass and saxophone, with The Crows, The Penguins, The El Dorados and The Turbans all scoring major hits.
Despite the subsequent explosion in records from doo wop acts in the later 50s, many failed to chart or were one-hit wonders.
"Rock Around the Clock" was a breakthrough for both the group and for all of rock and roll music.
If everything that came before laid the groundwork, "Rock Around the Clock" introduced the music to a global audience.
Most of Presley's early hits were covers of black rhythm and blues or blues songs, like "That's All Right" (a countrified arrangement of a blues number), "Baby Let's Play House", "Lawdy Miss Clawdy" and "Hound Dog".
The racial lines however are rather more clouded by the fact that many of these R&B songs originally recorded by black artists had been written by white songwriters, such as the team of Jerry Leiber and Mike Stoller.Although only a minor hit when first released, when used in the opening sequence of the movie Blackboard Jungle a year later, it set the rock and roll boom in motion.The song became one of the biggest hits in history, and frenzied teens flocked to see Haley and the Comets perform it, causing riots in some cities.There were also changes in the record industry, with the rise of independent labels like Atlantic, Sun and Chess servicing niche audiences and a similar rise of radio stations that played their music.recorded in April 1954 but not a commercial success until the following year, is generally recognized as an important milestone, but it was preceded by many recordings from earlier decades in which elements of rock and roll can be clearly discerned.The cover versions were not necessarily straightforward imitations.