Volume 4 of Personal Trainer is the fourth book in a training program offering musical workouts and enrichment activities for piano students of many ages and skill levels. The overall structure consists of five books, each containing four sections dealing with specific issues. These four sections are entitled: . Explorations . Eye-So-Metrics . Foundations . Repertoire The authors believe the development of technique, sight playing and analytical skills are part of an integrated approach to total musicianship; all are stepping-stones to aesthetic expression and musical understanding. They want their students to feel comfortable as they learn to hear what they see, see what they hear, and grow in their understanding of the building blocks of music. Those, simply stated, are fundamental goals of Personal Trainer. This book was created to work well by itself. It works even better when used with Home Concert Xtreme, an interactive software environment for learning, practicing, and performing music.