The core of The Music Factory is a flexible Teacher Resource Book, containing 120 practical activities for classroom music-making. A series of interrelated instrumental workbooks, each containing 25 units, support and complement the Teacher's resource by approaching the teaching of musical concepts in a similar way and encouraging a creative approach to learning an instrument. Alternate units in the instrumental workbooks contains the individual part for an Ensemble Piece, arranged for all the instruments covered by this project, and discussed in the teacher's resource.