Can you see a musician in this image, or a girlís face? Our brains make a decision between the negative and positive light in this simple illusion. The musician is a silhouette, facing sideways and playing what appears to be a saxophone. The girlís face is facing forwards and is starkly lit, with the eyes, nose and mouth in shadow. The womanís nose and mouth are the musicianís fingers as he plays. The top of her head is fragmented, making it difficult for our brains to work this out and we might see the prominent nose of the musician instead.