The series provides the very basics of harmony and the rules of Harmony are kept to a minimum but with emphasis on the most important points to give a thorough understanding of each topic. The exercises are carefully graded and must be worked at the point suggested, enabling the student to move straight into the exercises given in the ABRSM Theory in Practice or other boards of theory examination. It is harmony written in the simplest possible way to make the teaching and learning of harmony less frustrating.