rock and roll
rhythm and blues
rock and roll dominated popular music in the 1950s. The musical style originated and evolved in the United States during the late 1940s and early 1950s, and quickly spread to much of the rest of the world. Its immediate origins lay in a mixing together of various black musical genres of the time, including rhythm and blues and gospel music; in addition to country and western. In 1951, Cleveland, Ohio disc jockey Alan Freed began playing rhythm and blues music for a multi-racial audience, and is credited with first using the phrase “rock and roll” to describe the music.
In the 1950s the popular European music was pushed aside to make way for the influence of American types of music including jazz, swing and traditional pop, mediated through film and records. The biggest seen change of the mid-1950s was the impact of American rock and roll, which provided a new era for performance and recording, based on the demanding youth market. At first this was dominated by mostly American acts, or re-creations of American forms of music, but soon distinctly European Bands and individual artists began in early attempts to produce local rock and roll music.