Personal trainer : a keyboard musicianship enrichment program, including explorations, eye-so-metrics, foundations, repertoire. Volume 4 / Paul Sheftel, Phyllis Lehrer.
"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" -- cover.
Summary
"Personal trainer is a 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" -- page 3.