《汉书·志·礼乐志》
倾听的人没有不凝神虚心，高兴地沉浸其中，因此国内都知道皇帝的仁德，沐浴在他的精神下，能够使光辉曰新，使人变得高尚善良，却不知道是怎样如此的，最后还能达到万物不夭折，天地和顺，幸福降临。所以《诗》上说： 钟鼓齐鸣，磬管齐奏，神降福就多。 
听者无不虚己竦神，说而承流，是以海内遍知上德，被服其风，光辉日新，化上迁善，而不知所以然，至于万物不夭，天地顺而嘉应降。故《诗》曰： 钟鼓锽锽，磐管锵锵，降福穰穰。 
There is no one who hears these words who does not listen respectfully and attentively, thereby being happily absorbed; therefore throughout the empire people know the emperor's benevolence, and bathed in his spirit, can cause the great glory anew, and cause people to become elevated and good; yet they do not know how it so, and finally can attain that all things do not decay, heaven and earth are in harmony, and happiness descends. Therefore the Classic of Poetry says: the bells and drums sound in unison, and the stone-chimes and pipes play together, and divine blessings become abundant.