《淮南子·天文训》
南吕律上生姑洗律，姑洗的数是六十四，主管三月。姑洗律下生应钟律，应钟的数是四十二，主管十月。
姑洗之数六十四，主三月，下生应钟。应钟之数四十二，主十月，上生蕤宾。
The South Bell pitch produces the Maiden Cascade pitch, the scale of which is sixty-four and governs the third month. The Maiden Cascade pitch generates the Answering Bell pitch, the scale of which is forty-two and governs the tenth month.