Leena CarrOct 12, 20161 minHEARING COLOROnce regarded as a rare condition, synesthesia (literally “joined perception,” from the Greek word syn meaning “join” and aisthesis meaning “perception”) likely far more common that you might imagine. Some scientists speculate that one in twenty-three may experience this "cross wiring" of the senses. In the art world, perhaps the most notable synesthete was Vassily Kandinsky, who wrote several influential treatises that linked color and music. He titled his paintings as a m