Many genre categories for the old s

Many genre categories for the old songs got tinkered with, and some are quite confusing changes.

Results (Chinese) 1:

摆弄了许多体裁的分类方法为老歌曲，还有一些相当令人困惑的变化。

Results (Chinese) 2:

许多流派类别的老歌得到修补了，有些是相当混乱的变化。

Results (Chinese) 3:

对于旧歌曲体裁类别有很多了，有些是相当混乱的变化。