This book is primarily based on the material of the first year of the curriculum of conservatories and schools of Byzantine music, but it goes beyond that, attempting to present in a concise way a more general and as complete as possible picture of the theory and practice of ecclesiastical music, for those who would like to engage with it.

Its aim is to provide a well-documented theoretical view of ecclesiastical music regarding the terms used, the modes and the relationships governing them, the correct articulation of the syllables and musical phrases, along with a large number of musical examples not only from the modes of the ecclesiastical octoechos but also from those derived from them. For greater assistance, exercises and drills with all the signs of Byzantine music are offered to the student in a way that helps them assimilate them easily and quickly.