These chapters focus mainly on how music effects our behavior and how different types of music do different things. It also still continues to give information considered to be only things musicians would know in order to enhance logical appeal. The book tends to talk about very similar things, but is able to change things around so it appears to be like a lot more.
These chapters also talk about how music is put into different categories known as genres. The author asks how we differentiate between different genres and makes a good point how some defining characteristics of some genres go into other as well. An example was how heavy metal relies on distored guitars, yet The Carpenters used distortion in one of their songs and they would NEVER be considered metal. And how Led Zeppelin used a lot of acoustic instruments yet are considered by many to be the fathers of metal. He makes some good points.

