Blues and Rock Theory For Guitar is an excellent theory book from which you will gain a solid foundation in music theory and ear training. You will gain an intimate knowledge of diatonic harmony the three primary chord functions the major minor pentatonic and blues scales and be able to identify the most important intervals and chords by sight and sound. This book will give you a complete understanding of blues and rock chord progressions which you'll need to become a great player. The book also comes with an accompanying CD.