Book excerpt: Music therapists, as in medical and paramedical professions, have a rich diversity of approaches and methods, often developed with specific relevance to meet the needs of a certain client population. This book reflects the many components of such diversity, and is a thoroughly comprehensive guide to accessing and understanding the ideas, theory, research results and clinical outcomes that are the foundations of this field. Providing a detailed insight into the field of music therapy from an international perspective, this book enables the reader to see the complete picture of the multifaceted and fascinating world that is music therapy.