北京
治世之音安以乐
儒家的礼乐观和乐教思想认为，音乐产生于人心，人心又能被音乐感动。国家政治稳定的基础在于人心安宁祥和。如果社会太平、世道安稳，人们的情绪自然就会安宁快乐，这样的情绪情感反映到音乐上，音乐的风格就是安宁欢快的。反过来说，安宁欢快的音乐，也可以让人们的情绪稳定、情感谐和，起到调节社会气氛的作用。因此，音乐与政治相通，具有维护社会稳定、移风易俗的功能。
Music in an Era of Order Expresses Peace and Delight
According to the Confucian views on rites, music and music education, music arises from the human mind and moves the people. A country enjoying peace and order makes people feel peaceful and harmonious. In an era of peace and stability, people will naturally be in a peaceful mood, which finds expression in the idyllic and merry styles of music created by them. The idyll and merriness of music helps foster a fine social atmosphere by creating serenity and mental harmony among the public. In this sense, music has a political function, as it helps maintain order and cultivate morals and mores.
引例
试使知乐者，由今之器，寄古之声，去惉懘靡曼而归之中和雅正，则感人心、导和气，不曰治世之音乎？（《宋史·乐志十七·教坊》）（如果让一个通晓音乐的人，用现在的乐器演奏古代的音乐，除去其中滞涩不谐和纤弱柔美之音，回归适中、平和、高雅、纯正的风格，从而感动人心、引导和谐风气，这不就是太平盛世的音乐吗？）
Suppose a person well-versed in music plays ancient music with a musical instrument of today. Free from disorder, stagnation, weakness, and softness, his musical notes feature moderation, harmony, elegance, and purity. Such music touches people and creates a harmonious atmosphere. Surely this is the music of an era of peace and order. (The History of the Song Dynasty)
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