7874312|Goldberg Variations, BWV 988 - Var 9: Canon At the Third, for 1 manual （哥德堡变奏曲，作品988 - 变奏9. 三度卡农，使用第一层键盘）|250953|John Metz|722748|Bach: Goldberg Variations, BWV 988|1634978|102|1|1|0|4086936|1634978|7|0|0|0|3025234|2489615|0|002bUugd4XJMTO|000ZFtXh20Cr7u|000UG9nU2ZjYRf