ON CREATIVE ACTIVITY OF THE MASTER OF CHURCH-SINGING ART IVAN (ISAIAH) LUKOSHKOV (DIED CIRCA 1621)
The authors of the scientific study summarize and investigate data about one of the most prominent representatives of old Russian music - Ivan (in monasticism - Isaiah) Lukoshkov, son of Trofim. Contemporaries knew him as master of Usol'e (Stroganovs) church singing art school of the 16<sup>th</sup>-17<sup>th </sup>centuries. The authors provide an overview of the artworks - Lukoshkov's chants, and on the example of the most representative of them the creative principles and techniques of this raspevshik (Old Russin composer) are shown. The researchers base their observations and conclusions on the study of a wide range of documentary and narrative sources, church singing manuscripts of the 12<sup>th</sup>-17<sup>th </sup>centuries. In the course of the study of the Old Russian music artworks they use the author's textological formula-structural method.