Rock 'n' Roll : History
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   Rock 'n' Roll music came into being in the early 1950s. It resulted from a 
combination of rhythm 'n' blues music of the American black culture with the 
folk song styling of the southern white hill country population - a style once 
called hillbilly.
   "Sh-Boom" (1954) and "Rock Around the Clock" (1955) were the first two rock 
'n' roll recordings to achieve overwhelming success throughout the United 
States.
   The new music did not intrude extensively on the dance scene until 1960 
when a young black TV entertainer billed as Chubby Checkers (real name, Ernest 
Evans, Jr.) introduced a gyrating, twisting, free-style dance he termed the 
twist. Almost instantly, dancers who had been searching for a dance to fit the 
new rhythm realized that the twist was "it".