一切經音義 4.211

4.211

箜篌（上音空下音侯樂器名也釋名云師延所作靡靡之樂也後出於桑間[濮-(仁-二)+彳]上之空地盖空國之候所存也故名箜篌師涓為晉平公鼓焉鄭衛分其地而有也遂號鄭衛之音謂之淫樂也）。

箜篌 (The first character has the sound kong (空); the second character has the sound hou (侯). The name of a musical instrument. The Shiming says: "Licentious music invented by Shi Yan. Later it emerged in the vacant land around Sangjian on the Puyang River, being preserved in the watchtower (hou) of an empty state (kong guo), and hence named the konghou. Shi Juan played it for Lord Ping of Jin. Zheng and Wei divided that land and took possession of it, so it became known as the music of Zheng and Wei, which is called licentious music").