The Neuroscience Of Music
"The uncertainty makes the feeling – it is what triggers that surge of dopamine in the caudate, as we struggle to figure out what will happen next. And so our neurons search for the undulating order, trying to make sense of this flurry of pitches. We can predict some of the notes, but we can’t predict them all, and that is what keeps us listening, waiting expectantly for our reward, for the errant pattern to be completed. Music is a form whose meaning depends upon its violation." – Joanah Lehrer, Wired. My related essay here.