Actually, as early as the early 1930s, there was a song called Rock &; Fuck off, but there was no such music name at that time. The term "rock concert" was first used by DJ alan freed in his radio program at 195 1. It is said that new york still respects him as the king of rock music. Bill haley-bill haley and his Comet Band-His Comet Band stayed on the charts for eight weeks with a song "Rock Around Rock" in 55 years. With the help of this song, rock is well known to the world, so some people call 1955 the rock age, and Bill Henry has also been nicknamed the father of rock. The music sources of early rock music are very extensive, mainly blues, R& etc. B and country music, others include gospel music, traditional pop music, jazz and folk music. All these influences add up to a simple song structure dominated by blues, which is fast-paced, suitable for dancing and easy to remember. The first rock stars-Chuck Berry, Elvis Presley, little richard, Jerry Lee Lewis, buddy holly, Bo Dudley, bill haley, Jean Vincent, Eternal Brothers, carl perkins and many others-established a rock-and-roll model, which people have been following for the next forty years. In every decade, many artists copied the music of the first batch of rock musicians, while the remaining artists expanded the original definition of rock and roll, and some artists completely broke the limited mode of this genre. From the British invasion, folk rock, psychedelic rock, to hard rock, heavy metal, gorgeous rock, and then to punk, in fact, every branch of rock is loyal to the most basic structure of rock from the beginning. But once this change happened, traditional rock gradually disappeared from the pop music charts-of course, some artists kept shining. Some bands, such as the Rolling Stones and the Faces, always adhere to the most basic rules of traditional rock, but they make music faster and more free. Other bands, such as the prototype punk underground velvet, New York doll, and clown, retain the basic musical structure, but their behavior has more threatening elements. Other artists have become rock traditionalists, such as Dave edmonds and Graham Parker. Their songs and records never broke away from the rock mode in the late 1950s and early 1960s. Although the word rock and roll has begun to refer to more and more different music styles in the decades after its appearance, the essence of this music has never changed.