Why is Japanese Warring States music so weird?

During the Warring States period, wars were frequent, and the lives of military commanders and people were bloody, so their thoughts fluctuated greatly.

Maybe I'm still spending the night with my family at one moment, and I'll die on the battlefield the next.

So the music at that time reflected the people's mentality, with many ups and downs.

Relatives and friends who died in the battlefield reflected each other with the bleak moonlight, and naturally they felt that way when listening.

Modify it a little. At that time, music was mostly plucked. For example, the Japanese Sanwei line is a representative of great taste.