荻生徂徠の『碣石調幽蘭第五』解読研究

『幽蘭譜抄』にみえる調弦法の解釈をめぐって

抄録

The purpose of this paper is to clarify the content of a study in which a Confucian scholar of the mid-Edo period, OGYU Sorai, examined Jieshi-diao Youlan Vol. 5 (abb. Youlan), a classical music notation of the Chinese qin (Jp. kin), the seven-stringed zither.
Youlan is the world's oldest extant notation of qin music, and is now preserved as a national treasure in the Tokyo National Museum. Since it is an important resource that conveys qin music before the Tang dynasty, interpretive research and reenactment of Youlan have been actively conducted in both Japan and China.
OGYU Sorai was the first scholar to discover the value of Youlan. Sorai is known have devoted the last years of his life to the interpretive study of Youlan. Yet, very little has been known about how he actually translated and played Youlan.
In this paper, as the first step to uncover the actual facts, Sorai's interpretations on the tuning of Youlan were examined mainly based on his book, Yuran-fu-sho. As a result, the following findings became clear.
First, Sorai interpreted the tuning of Youlan not as the tuning of what is called “zheng-diao (Jp. seicho)”, the basic tuning of qin, but as the “manjue-diao (Jp. mankakucho)” with the third string lowered a semi tone.
Second, the basis for interpreting the tuning of Youlan as the “manjue-diao” was founded on his view regarding Jieshi-diao (Jp. Kesseki-cho) as well as on his theories regarding the modes of the tuning of the qin and Japanese gagaku (togaku), which have been discussed in his writings such as Kingaku-taii-sho.
Lastly, before this study, Yuran-fu-sho had not been recognized as Sorai's writing; this resource had never been mentioned in previous studies. In this study, however, the presence of Sorai's autographed book owned by the OGYU family, was verified for the first time, proving that Yuran-fu-sho was Sorai's work.