The experience we have listening to music at that "intuitive level" is rooted in primitive limbic functions of awareness -- deep in our lizard brain. McGill University scientists observed that consonance and dissonance will light up the limbic systems responsible for pleasurable and negative emotions appropriately. The non-cognitive experience of music can trigger areas in the brain sufficient to cause the release of endorphins; when they reach the limbic system’s opioid receptors, feelings of satisfaction ensue. In his book What to Listen for in Music, American composer Aaron Copland talks about this in different terms, describing how a fundamental aspect of enjoying music takes place on a "sensuous plane," which is "a kind of brainless but attractive state of mind [that] is engendered by the mere sound appeal of music." [it goes on ...]