《太平广记·卷二百零五·乐三》
这些乐曲，都声音清丽，超凡脱俗，跟平常的乐曲不一样，有点像仙家《紫云》一类的乐曲。
其声清越，与常异，类于仙家《紫云》之亚也。
The tunes of these pieces of music are beautiful and elegant, and they are not the kind of music that ordinary people can play. They sound a bit like the music played by immortals like Ziyun.