Elvis Presley shook his hips and the rock and roll craze began. When Elvis appeared on TV he entered the homes of America. Kids loved him and their parents were shocked. Elvis ' music, which was called rockabilly , was a mixture of country music and rhythm and blues . This new feel-good music of the 1950's was a symbol of a changing world, one where people felt more positive. Young people, who were called teenagers for the first time, were looking for something new and more exciting to listen to. They found that new energy in rock and roll .

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