rock and roll, also called rock ’n’ roll or rock & roll, style of popular music that originated in the United States in the mid-1950s and that evolved by the mid-1960s into the more encompassing international style known as rock music, though the latter also continued to be known as rock and roll. Rock and roll has been described as a merger of country music and rhythm and blues, but, if it were that simple, it would have existed long before it burst into the national consciousness. The seeds of the music had been in place for decades, but they ...(100 of 630 words)

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