In Chapter Two we introduce the amygdala which has a lot to do with how we feel about music. On November 7, 2021, Sixty Minutes covered research at Georgetown University that showed that altruists--heroes--have amygdalae that are "larger than normal and more reactive to images of people who were afraid." You can find the story here: https://www.cbsnews.com/news/carnegie-heroes-60-minutes-2021-11-04/.