on the other hand , " akikaze no kyoku " (a song for the autumn wind ), composed by researching the poem ' the song of everlasting sorrow ' by bai juyi , was a work for koto and song by the compositional style of koto kumiuta (koto suites of songs ) and danmono (most important type in shirabemono (the koto solo instrumental music )) during the early edo period and for this he invented a new method of tuning koto called ' akikaze-joshi tuning ' where he incorporated the mode of ming and xing-era chinese music (as popularized in japan before the first sino-japanese war ) that had been popular in those days . 一方『秋風の曲』は、白居易の詩「長恨歌」に取材、やはり江戸初期の楽曲形式である箏組歌と段物のスタイルによって作られた箏と歌のための曲で、そのために新たな箏の調弦法「秋風調子」を考案したが、当時流行していた明清楽の旋法が取り入れられているという。