Estill Voice Training is a voice training method developed by Jo Estill, a renowned vocal coach and researcher. The EVT approach focuses on understanding the coordination of the vocal instrument, allowing singers and speakers to access a wide range of vocal qualities and expressiveness.
The Estill Voice Training book, often referred to as the "EVT manual," is a comprehensive guide to the EVT method. While I couldn't find a specific PDF version of the book, I can provide insights into its contents and structure.