I am a registered music therapist. I found this to be a very understandable and easy to read book. It outlines everything a music therapist needs to know in a clinical setting. It would be a great book for an intro to music therapy class. It sets the tone for a solid music therapy program. First, it defines music therapy with different populations, i.e., behavior disorders, developmental disabilities, psychiatric disorders, medical patients, etc. In short, all of the places where music therapists work. Second, it outlines the steps: Identifying the therapeutic objectives, assessment, designing a therapeutic plan, determining strategies, implementing the plan, and evaluating the music therapy. Each step is a chapter in the book, and each chapter ends with a selection of other books for further reading. In a nutshell, this is goal-oriented music therapy. If all university programs educated their students (and not all do) as concisely as this book, there would be a lot more good music therapists walking around.
I'm one of the many students of music therapy using this as a textbook for class. Hanser describes her process in therapy well, discussing all the necessary aspects from assessment to termination. My relatives are reading this to learn more about what I'm learning as well. It might be dry reading if you're not already somewhat knowledgeable about music therapy. For a first taste, I'd recommend Kenneth Bruscia's Case Studies.
I haven't read this book yet, but I am REALLY looking forward to it. I am a sophomore in high school and I am planning of going into the field of Music Therapy after college. I want to read this book as soon as I can so that I will have a good idea of what I have before me in this line of duty.