《汉书·志·礼乐志》
祝在庙门迎接神灵，演奏《嘉至》乐，就像古代使神降临的音乐。
大祝迎神于庙门，奏《嘉至》，犹古降神之乐也。
To greet the spirits at the temple gate, they played the "Grand Arrival" piece, just like the ancient music that invoked the gods to descend.