This is an outstanding step-by-step guide to voice improvement. Each chapter includes clear explanations and instructions, illustrations, and loads of practice sentences to help one develop "career" speech. I have used this book as a student, instructor, and actor for many years with great success. Although most people may use this textbook to improve vocal tone and articulation, it is also an outstanding resource for actors who need to acquire an accent or dialect for a role. The large section on stage dialects and foreign accents shows the appropriate sound substitutions needed and includes practice exercises for each accent; actors will find this particularly useful. So, whether you want to improve your voice, or instruct a course in voice and diction, or prepare for the stage or screen, this is the one book you must have.