With J'Apprends Le Cor Volume 1, music teachers are able to use the authoritative and expert lessons contained within to build constructive and creative lesson plans.  This book has been designed for young students in music schools, but is not a self-teaching tuition book. It's a tool for teachers to use to build their lesson plans, while also incorporating their own habits and personal ideas of learning the French Horn. Therefore, the technical explanations are left to the discretion of the teacher.