Book excerpt: Now in one convenient volume, Vocal Health and Pedagogy: Science, Assessment, and Treatment, Third Edition answers every question you've ever had about the voice, from the physics of sounds, to vocal technique, to medications, to performance anxiety. It presents anatomical, physiological, and neurological considerations, as well as covers critical issues related to patient history, laryngeal function, the physical examination, and historical perspectives of vocal pedagogy. The first part of the book introduces basic concepts of voice science, assessment, and training. It focuses on the science behind the common problems that afflict voice users and enables understanding of the medical approach to problem analysis. The second part of the book contains additional information on the specific health and performance conditions that affect the voice and their assessment and treatment. It considers the medical and nonmedical issues affecting the human voice, including diagnosis and treatment of voice problems, the effects of physical injury, posture, pollutants and irritants, psychological effects, voice therapy, medication, and more. New to this edition: New chapters on topics such as pedagogy for children, the importance of studying music, laryngeal issues involving wind instrument performance, high-speed digital imaging, the evolution of technology, pediatric voice disorders, thyroid disorders, the vocal effects of birth control medications, and autoimmune disorders.Many chapters have been extensively revised to update previous content and add new information on material such as choral pedagogy for geriatric singers, World Trade Center syndrome, and laryngeal effects of asbestos exposure.Chapters on medications for performers have been revised to delete medications no longer used frequently and to add various medications and drug classes that were not included previously, as well as information on alternative and complementary medicines.References have been updated throughout to include discussion of new studies and a review of the latest literature, while also retaining the classic literature.Includes the most recent practices and techniques, the latest information on surgical and adjunctive therapy, and important changes in criteria and strategy. Vocal Health and Pedagogy: Science, Assessment, and Treatment, Third Edition is ideal for courses in vocal pedagogy and speech-language pathology. Additionally, it is a valuable resource for professional and amateur performers and their teachers.