《太平广记·卷二百零四·乐二》
玄宗天宝十四年六月日，正值皇帝住下骊山行宫，又是贵妃杨玉环的诞辰生日。皇上诏见梨园小科班为娘娘演奏祝寿。我们都被接到长生殿，奏献新曲，没有命名。
至是遂以应命。到会所，澄波万顷，景物皆奇。
On June 14th in the 14th year of Emperor Xuanzong of Tang in the Tianbao era, the emperor was living at the imperial palace at Lishan Mountain, and it was also the birthday of Imperial Concubine Yang Guifei. The emperor summoned the small music academy at the imperial garden to play birthday music for her. We were all invited to Changsheng Hall to play a new piece with no name.