Bill Haley In 1954, the first rock n roll record "Rock Around the Clock recorded. Not to say that Rock n Roll was not recorded before that date. What I am saying is that, in general, "Rock Around the Clock" is regarded as the first. Next was Bill Haley's hit song, "Rock n Roll music as rhythm and blues, making only a slight impact on the popular music of the day. There were, however, until 1955, an entire generation to become a World War II baby boomers are about young people and reject the musicprevious generations. N Combining rhythm and blues with country music, the mid-1950s singer-songwriter creates RocknRoll. In its new form of rock n roll fantasy began the young man. What started in April 1954 Bill Haley, Elvis Presley recorded completed in August 1954, when he said "That's All Right Mama." Rock n Roll was here to stay.

http://www.youtube.com/watch?v=QA508Ff_9b8&hl=en

If you are under the age of 30 years, you've probably never seen a record player out of a movie, and if you are under the age of 20, you may never have seen a movie in one. Turntables are used to playing old vinyl LP's, records, and they work using the needle easily by a spiral groove on a record, from the outer edge of the inner zone.

This needle would be used to create an oscillating electric current, which was used to generate speaker drive and a sound. A large part ofAudio technology that we take for granted (high fidelity, stereo sound) were first pioneer work in turntables.