A full course of study under one cover, "Garage Band Theory" is impressively informed and informative, practical, insightful, and should be considered an essential resource for any aspiring musician. The chapter quizzes (and answer keys) make it a practical guide for all music teaches and home-schooling parents who have rudimentary skills on any instrument. Exceptionally 'user friendly' in organization and presentation "Garage Band Theory" is very highly recommended for both community and academic library Music Theory & Instruction collections. James A Cox - Midwest Book Review