Music has become such an ever-present influence in our daily lives, we seldom stop to consider what effect it has on us. But we must. As we changed over the last hundred years from being music makers to music consumers, we have gradually lost control over, and even awareness of, our auditory environment. In what way is music beneficial to our bodies and minds? In what circumstances can it actually be harmful? Solid scientific research provides some astounding answers to such questions—indeed, facts that must not be ignored by today’s parents and children.