A quick read, and the science was easy to understand and very interesting. Worth the read if you are using the music. The authors very clearly love animals, and are interested in finding methods to calm animals and to add tools to the toolbelt needed for animals with issues like separation anxiety, fear, fear aggression, etc. They gave great suggestions for how to use this music with other training techniques and techniques such as energy work (I'm not sure what that is) and massage. Read the parts about the human-animal bond and dog and human heartbeats. It made my heart swell even more for my dog.
As a city dweller I found the parts coaching through how city noise can affect animals particularly interesting. I immediately went through my house and turned off unnecessary beepers and buzzers, and timed playing the cd when I know outside noise is the worst in our neighborhood.
I started using the music with my dog and two cats when my dog was injured and on restrictions. He was antsy and kept picking on one of the cats. The music definitely calmed them both down and lessened their negative interactions. It is also quite peaceful for the humans in the house.