《晋书·志·第六章》
这样，歌唱与演奏就都合乎经籍礼制的要求，考校古代典章，乐制也更为典雅。
则歌奏之义，若合经礼，考之古典，于制为雅。
In this way, the singing and playing conform to the requirements of the classics and etiquette. The examination of ancient etiquette and music system will be more elegant.