“It is not surprising that music can incite a broad range of emotions, including passion, serenity, and fear. Most of us can recall instances when music caused changes in our own emotional levels, perhaps when we listened to Handel’s Hallelujah Chorus or the background music in a movie thriller. The reason for the emotional arousal appears to be that music affects levels of several brain chemicals, including epinephrine, endorphins, and cortisol, the hormone involved in the “fight-or-flight” response. In Chapter 9, we saw that one of the links between emotion and memory involves these same neurotransmitters and hormones. Perhaps this is why a mere snippet of a song from our past can trigger highly vivid memories.”