Book excerpt: The Music Substitute Sourcebook is an engaging, ready-to-use resource for music teachers or music substitutes. These quality, standards-based lesson plans and student activities have been developed to allow anyone to easily step into the role of "Music Teacher" and maintain the educational momentum of the class. The fully reproducible lesson plans in The Music Substitute Sourcebook have been thoroughly field tested by substitutes with no musical training, and they have enthusiastically endorsed the easy-to-follow format and creative, fun-to-teach activities. With The Music Substitute Sourcebook, students will be actively engaged in the lessons and furthering their musical growth as they discover and explore a wide variety of musical concepts.