Michael Spitzer: How music rewires the brain

Music is at least a million years older than language, yet we still see it solely through the lens of entertainment. Professor Michael Spitzer argues it's something closer to a biological system, one that was shaping the human body long before we had words for what we were feeling.
Why does a chord you've never heard before make you want to cry? Why do babies respond to rhythm before they've heard a single song? Why does the same part of your brain that processes mortal danger also process musical beauty? The answers reach back 4 million years, and forward into a future where music may be prescribed like medicine.