This book is specifically aimed at developing the ROCK voice, for male or female singers wanting to maintain and improve their voice for purposes of singing rock or even heavy metal music. The author lays out his intentions up front, with a range chart showing the feasible vocal range of rock singers vs. a similar range chart for classical music. Most of the remainder of the book is taken up with vocal exercises (written out in notation) aimed at opening up the voice, developing the head voice, and coloring the voice for rock singing styles. A very helpful book! 116 pages.