accustomed though we are to speaking of the films made before 1927 as “silent”, the film has never been, in the full sense of the word, silent. from the very beginning, music was regarded as an indispensable(不可缺少的;绝对必要的) accompaniment(伴奏;伴随物); when the lumiere films were shown at the first public film exhibition in the united states in february 1896, they were accompanied by piano improvisations on popular tunes. at first, the music played bore no special relationship to the films; an accompaniment of any kind was sufficient. within a very short time, however, the incongruity(不协调;不一致;不