In Japanese traditional beliefs and literature, onryō (怨霊, literally "vengeful spirit", sometimes rendered "wrathful spirit") refers to a ghost (yūrei) believed to be capable of causing harm in the world of the living, injuring or killing enemies, or even causing natural disasters to exact vengeance to "re-address" the wrongs it received while alive, then taking their spirits from their dying bodies.
I tried to give a weird dimension to Japanese instruments. I experimented around Koto, shamisen, taiko and shakuhachi, to bring a vision of mystery, threat, unknown.
