noun
third in iroha order; c; iii
Used as a sequence marker in the traditional iroha ordering system, equivalent to 'c' or 'iii' in Western contexts.
See also: いろは順
いろは順でハは3番目です。
In the iroha order, ハ is the third.
noun
Used mainly in key names and chord notation in music.
この曲のキーはハ長調です。
The key of this piece is C major.