《平均律钢琴曲集》第一集创作于1722年,共二十四首,巴赫使用了全部24个大小调,调性的排列顺序为:C 大调、c小调、升 C 大调、升 c 小调依此类推,每首作品都是无标题的。都由前奏曲和赋格两部分组成。虽然是无标题的,但每首都有丰富的情感和深刻的内涵。第二集创作于1744年,也是二十四首。 The first episode of “The Mean Law Piano Collection” was written in 1722 in total of twenty-four. Bach used all 24 minorities. The order of the tonality is C Major, C Minor, C Major, c minor and so on, each piece is untitled. Both consist of prelude and fugue. Although it is untitled, each capital has rich emotions and profound connotations. The second episode was created in 1744 and is also twenty-four.