This is not a book for beginners or even intermediate players. I have taken piano for 10 years and I was mystified by much of the theoretical information. Turns out even my piano teacher, who majored in theory, had difficulty figuring out what was going on. What became clear as we puzzled it out was that Mann often left out steps in theoretical reasoning, or bent classical theory rules, or threw in some esoterica that even someone advanced in theory would find challenging. If it weren't for my piano teacher's help, I would have been at a loss and very frustrated. As it was, I wonder what Mann can have been about. Is he one of those who can play but not explain the steps in a learnable fashion? Or is he out to dazzle the poor initiate? With my teacher's help, however, I have learned a lot about theory applied to blues style and this and the exercises have been quite useful. I didn't find the CD much help, since the text is not keyed well to the CD. However, Mann plays a compelling blues piano. Wish I could play like him. Final assessment:This book will deepen your experience with blues theory significantly but isn't easily accessible or user friendly.