This all began ....

..with this soundtrack the classic film music was pop music. Or. Williams managed to transport it symphonic film music in all ears. One of the first film music, which is to hear all the time in the film, that is, the soundtrack runs throughout the film, without a break. This was not always so, because it was customary to compose Filmmsusik for certain passages of a film. In this case, the music accompanied everything.
Class thing and reference works. Must be nothing to write about the topics that are anyway in everyone's ear.