一切經音義 26.30

26.30

箜篌（釋名云此師延所作靡靡之樂後出於桑間濮上之地葢空國之侯所存師延為𣈆平公鼓焉後為鄭衛分其地遂亾其國故號為鄭衛之音謂之淫樂也）。

Konghou harp (the Shiming says: "This was created by Master Yan as languid music; it later emerged from the Sangjian and Pujiang areas; it probably originated from the marquis of an extinct state; Master Yan played it for Duke Ping of Jin; later Zheng and Wei partitioned its land, and that state was eventually destroyed, hence it was named the music of Zheng and Wei, and termed licentious music").