 Once again, the origin of its unusual name is unknown.One legend says that, during the Edo period, on it stood a pine tree which shook even when there was no wind, producing an extremely pleasant sound as if a celestial creature was playing an instrument.According to another, the founder of the shrine, who was a Kamakura period samurai called Sasaki Moritsuna, saw the pine tree move very slightly and emit sounds like those of a koto, so he gave the cape its name.