From The Mind, a LIFE Science Library Book, by John Rowan Wilson and the Editors of TIME-LIFE Books. (1964, reprinted in 1971)
I would have been obsessed with this book if I’d had it as a child.
"Routes for Musical Messages
The picture on the opposite page is a photograph of a pianist. On it have been sketched the two hemispheres of the brain, a network of nerves throughout the arms, and a connecting length of spinal cord. The system of billions of cells and miles of fibers can relay many messages at once…”