Buy a five-dollar plastic umbrella,and rain sounds like plastic banging on plastic.It makes a storm feel annoying.A traditional Japanese umbrella — wagasa —does the opposite.It takes a single stalk of bamboo,splits it into forty or fifty hair-thin ribs,connects them with thousands of hand-tied stitches,stretches handmade washi paper across the frame,and coats it in natural perilla oil.It takes months to make just one.When you open it, forty ribs snap outward in perfect unison,creating a geometric dome of light.And when the sky opens up?Water doesn’t smack it.Oiled washi paper absorbs the sharp crack of falling rainand turns it into a soft, melodic tapping —like fingertips dancing across a koto harp.In the West, an umbrella is a shield to defend you from the sky.In Japan, it is an instrumentthat allows you to walk through a stormand listen to the weather sing.