- 関西大学東西学術研究所紀要 = Bulletin of the Institute of Oriental and Occidental Studies, Kansai University (ISSN:02878151)
- no.51, pp.111-143, 2018-04
This paper presents five newly-identified documents on music, written by OGYŪ Sorai (1666-1728). It first introduces two letters from the second month of 1720 (Kyōho 5) responding to questions posed by ARIMA Ujinori (1668-1736), a close confidant of the eighth shōgun of the Edo bakufu, TOKUGAWA Yoshimune. They describe the measurement system used in the Chinese Zhou Dynasty and changes in musical tonal systems and metrological standards over successive periods. This is followed by OGYŪ's notes on his work, Sango Yōryaku-kō (Reflections on Sango Yōryaku; believed to have been written in 1727 [Kyōho 12]) and on the music accompanying it. Sango Yōryaku-kō talks about a manuscript copy of Sango Yōryaku - a collection of musical notations for the Japanese gagaku biwa. The third document discusses historical materials concerning the seven-stringed qin, its strings, tonal system, and modes. The fourth, written in the fifth month of 1727 , discusses a work on music theory formerly held by the Kissui-in monastery. These four manuscripts are contained in historic documents owned by the OGYŪ family. For the purpose of presenting their contents, I have transcribed facsimile copies available in the Masao Maruyama Collection at the library of the Tokyo Women's Christian University. The fifth and final item comprises copies of four letters from OGYŪ which were contained among FUJISAWA Tōgai's manuscript copies in the Hakuen Collection at the Kansai University Library. In my opinion, OGYŪ most likely wrote them in 1725 (Kyōho 10) to the scholar of calendrical calculations, NAKANE Genkei (1662-1733), at around the time that the bakufu ordered OGYŪ to review Zhu Zaiyu's musical treatise, Yuelü quanshu (Complete compendium of music and pitch). From these letters, I have selected the parts concerning music and present them in transcription.