The Error Detection: Exercises for the Instrumental Conductor texts are designed to improve the critical listening skills of the conducting student through real music excerpts that contain planted errors in the parts for the conductor to find. Both books contain 54 excerpts from standard band literature from grades 2 to grade 6 so students gain knowledge of real music they can use later, not just non-musical etudes. The teacher's edition contains over 350 pages of materials with analysis sheets ...