The book marks the beginning of a deep spiritual and rational understanding and experience of the phenomenon of the church word, clothed in the liturgical form of liturgical music of the Orthodox Church. In what sense can we talk about the “theology” of liturgical music? Is the canon and tradition of liturgical music developing, or is it our task to preserve it unchanged, just as the canon of the Divine Liturgy is preserved? What can be considered, by analogy with icon painting, canonical in church singing? And what is the purpose of liturgical music in the Church?

The author, brought up on the best examples of the Slavic tradition of church music in its Russian version, also relies on the practice of various, mainly Eastern, Churches, trying to find the answer to all these questions that invariably arise before everyone who is not alien to the liturgical experience of life in the Church.