The best vocal book I have found yet covering many aspects of vocal technique. If you want to learn about breathing, warm up, looking after your voice, tone, expression, etc..then this book explains it in an easy to understand way and in detail. Great value and a book I recommend to all. I am a vocal coach myself and it has been very useful. The cd I use time and time again to continue to develop as a singer myself. It has hundreds of scales for low and high voices, for beginners through to advanced. Excellent!