Before I studied this paper, I studied "the Research of the Documents Treated in Chosoˇn-wangjo-sillok": Laying emphasis on the Document. That study was to identify where and how 16 kinds of the documents were mentioned. It's intention was to identify how a policy of courtesy and music in Chosoˇn was acted. Among those researches, it was made certain that Aksoˇ 『樂書』 written by Jin Yang 陳暘 was totally 38 times mentioned and discussed in Chosoˇn-wangjo-sillok『朝鮮王朝實錄』. It was the most frequent appearances among 16 documents quoted in Akhak-kweboˇm 『樂學軌範』, so it was concluded that Aksoˇ was used as the important music document in Chosoˇn. A purpose of this paper is to identify where Aksoˇ written by Chin Yang is mentioned and quoted and to reveal how it is used in Chosoˇn's music and courtesy policy. Revised CD-ROM Chosoˇn-wangjo-sillok translated into Korean published in 1997 is used in that way to study this paper. And the range of this study is from Taejo-sillok 『太祖實錄』 to Ch'oˇljong-sillok 『哲宗實錄』. Besides, I'll identify the content of Aksoˇ, so that I intend to aid the understanding of this paper. Chin Yang's Aksoˇ was mainly used to establish the musical policy from T'aejong 太宗 Period to Sejong 世宗 Period (1418-1450) in Korea Dynasty, it was identified that they hunt for akgong 樂工 at Tang 唐 (China) and then learn the music. And Pak Yoˇn 朴堧 was allowed to edit the music books including an instrumental method and how to make sheet, because he needed a theoretic basis to establish 'royal court of music'. In addition to this, Pak Yoˇn tried to establish music grounding old system such as Aksoˇ written by Chin Yang. According to Chosoˇn-wangjo-sillok, CHin Yang's Aksoˇ was reflected at the musical policy in Sejong Period, especially the content of Akkidosoˇl 『樂器圖說』. In Aksoˇ, not only royal court musical instrument and the ritual things are presented by a picture but also the shape, construct and rendition of the instrument are presented in detail. Therefore Aksoˇ played an important role as a guide in a policy of courtesy and music in the early Chosoˇn times (1392-1592). Aksoˇ which had wide content used to be evaluated in that it had important literal values in the study of chinese music history and the study of music theory, especially in the study of eastern music and culture. As noting in this paper, the content of Aksoˇ which explained by a picture in detail is mentioned and quoted in a policy of courtesy and music by some confucian scholars including Pak Yoˇn in the early Chosoˇn times. And Aksoˇ is quoted 52 times in Akhak-gweboˇm 『樂學軌範』 edited in Soˇngjong 成宗 Period (1469-1494), so it is revealed to be dealt as and important music book. Therefore Aksoˇ is valued as an important book in the study of Chosoˇn's music history. Aksoˇ is mentioned 38 times in Chosoˇn-wangjo-sillok. Accordingly it is sure that Aksoˇ written by Jin Yang is important in the establishment of a policy of courtesy and music in Chosoˇn.

제1장 머리말: 진양 『악서』 연구의 필요성 
제2장 진양 『악서』의 구성내용 및 사료출처 
제3장 『조선왕조실록』에 거론된 『악서』의 사료검토 
제4장 맺음말: 진양 『악서』의 새로운 이해 
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영문초록

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