Vocal strength is essential to producing a good sound, singing with control and confidence, and singing for many years. A weak voice is one that tires easily, one that is inconsistent in sound quality and/or pitch and dynamics, and one that gives out many years before the singer is ready to stop singing. Vocal strength is not all about singing loudly, it's about singing well. The exercises and musical selections in this book are designed to help singers hone and refine their skills to develop the kind of control and consistency professional singers need to compete and find work. But mastering these skills is not just a task for professional singers - amateur singers who work on the exercises in this book will find singing easier and more fun with each new level of control they achieve. The online audio files contain demos for listening, and separate backing tracks so you can sing along. In addition to vocal exercises, several songs are included for practice, including: Danny Boy · The House of the Rising Sun ·¦Look for the Silver Lining · Sometimes I Feel like a Motherless Child · and more. The audio is accessed online using the unique code inside each book and can be streamed or downloaded. The audio files include PLAYBACK+, a multi-functional audio player that allows you to slow down audio without changing pitch, set loop points, change keys, and pan left or right.