Scale Monster(TM) is thoughtfully designed and created for how children learn. ♫Prep A & B Book Now Available: https: //www.amazon.ca/dp/B07N97D8LWScale Monster Prep A and B is thoughtfully designed to help young musicians with effective daily practice of scales and triads. The scale book can be used together with preparatory or beginner method books. The book focuses on scales and triads suitable for beginner musicians.