a style of popular music that originated in the 1950s, characterized by a heavy beat, much repetition of simple phrases, and often country, folk, and blues elements
Rock ’n’ roll is instant coffee — Bob Geldof
Synthesized out of black rhythm-and-blues of the 1940s and white country music of the same era, rock ’n’ roll became the youth music of choice in America – and subsequently the rest of the developed world – in the mid 1950s. The full term is still used to describe the pop music of that period, but the more abbreviated ‘rock’ is an unspecific generic for most subsequent styles of popular music — Richard Cook
a style of dancing to this music