This is a book for the ears and for the hands. Playing harmonized scales in triad form is extremely helpful for the progressing guitarist. First, the guitarist will become acquainted with the harmonic sound of each key. A sense of harmonic and melodic voice leading will also be developed. These studies were written to be fun to play and interesting melodically. The studies are presented from tonic major to tonic minor instead of from tonic major to relative minor. It is helpful to play one key per day as a part of a daily practice routine. This is the second book in Mel Bay’s Achieving Guitar Artistry Series and follows the initial Linear Etudes text. Mastery of this book will do much to enhance the guitarist’s sense of voice leading, note reading and improvising.