As featured on Brain Pickings, synesthesia is a rare neurological condition where stimulation in one sensory pathway triggers an experience in another. For example, some synesthetics are able to “hear” colour or “see” music.
In Giant Steps, synesthetic Michal Levy gives us an idea of how she sees this piece of music by John Coltrane. Notice how it builds up, then disintegrates into little squares (notes) near the end.
