we do not put on records of chickens clucking, waterfalls falling, some of us do, but the real music come from this arrangement of organized sound we call music. i have to say, we do not really know. the closest we have got is music appears to be metaphorical for movement and instruments sometimes sound like a mother singing, crying. and the only thing we know for sure is that music is activating a lot of regions in the brain. i think the best explanation that i will propose now, tentatively, as it has to do with expectation and release. when we hear a piece of music, because it has a pulse, we almost always know when the next bibelot be, but we do not know what it will be. the job of the composer is to reward us by playing what we expect, but violating those expectations just often enough of the time to keep us interested. when the composer can violate those expectations in an interesting way and give us a resolution that we would have never predicted, then they have got us for life. the brain love learning new things, taught something, and music is, in effect, teaching us something