Bill Boyd. This book is designed for the pianist/keyboardist with moderate technical skills and reading ability who desires to play jazz styles and learn to improvise from reading chord symbols. It is an ideal self-teaching book for keyboardists in high school and junior high jazz ensembles. Unique features of this book include chords and progressions written out in all keys (not just written in one key with a complicated formula for figuring out all the other keys), a simple fingering system wh