Very cool stuff. I remember my first year of high school - in our first music class, we were taught: &quot;what is music?&quot;. According to the teachers, and the dictionary, &quot;music is organised sound&quot;.<p>Never seemed like a satisfactory answer to me. And finally I have confirmation: the world&#x27;s brightest scientific minds, at MIT, in 2016, are only just now cracking the surface of this complex question.<p>The word &quot;music&quot; has been in the human vocabulary forever. But how does the brain actually define music, and classify it as &quot;not noise&quot;, at a neurological &#x2F; chemical &#x2F; acoustic level? This field has been little more than guesswork until now. Very exciting times.