《汉书·志·礼乐志》
到孝惠帝的时候，把沛宫作为原庙，全都叫唱歌的孩子练习吹奏用来相和，经常以一百二十人作为定员。
至孝惠时，以沛宫为原庙，皆令歌兒习吹以相和，常以百二十人为员。
In the reign of Emperor Xiaohui, the Peigong was used as the original temple, and all the children who sang songs were called to practice playing instruments and singing together, with 120 people as the regular number.