Rock music consists of many different styles. Even though there is a common spirit among all music groups, they make very different music. Rock music developed in the 1950s and the early 1960s. At that time the Beatles entered the world of music from Liverpool.
After they were given an invitation to appear live on BBC, the Beatles quickly became famous in Britain with nationwide tours. By mid-1963, the Beatles had been extremely popular in England. Even their hairstyles became major trends at that time. They held large concerts and performed at clubs. They became the hottest thing on the pop music scene in England. They began as a modestly successful musician group and ended the year as show business legends（傳說）. John Lennon and Paul McCartney were named composers of the year.
They decided on a tour to the United States in 1964. They were not sure how the Americans would react to the new type of music. Beatlemania hit New York on February 7, 1964. Hundreds of fans jammed the airport to greet them. They performed their first concert in America at CBS television’s 53rd street studio. The concert was broadcast live and attracted the largest one night audience in the history of television up to that time. The Beatles were described as a British invasion（入侵）by local and nationwide newspapers at that time. Their victory in America was still remembered as a major turning point in the history of rock and roll. Thanks to the Beatles, a lot of opportunities were opened up to new faces on the market. Many rock bands were able to follow in the footsteps of the Beatles.