Grigališkojo choralo tradicijos bruožai Lietuvos didžiojoje kunigaikštystėje. XV-XVIII amžių atodangos ir rekonstrukcijos bandymas

The present dissertation in its essence is an interdisciplinary (i.e. historical, musicological and liturgical) research. The primary aim of this work is to settle the explicit, historically and methodologically correct general view of the plainchant within the concrete historical, cultural and geographical location in a defined period of time. The object of the dissertation is the expression and development of the Gregorian chant in the Grand Duchy of Lithuania as represented in a variety of sources. The time period examined is from 1387 to 1795 (i.e. from the Latin Baptism of the state until the fall of the Republic of Two Nations). However, the main focus is for the period of the 15th to the 17th centuries. The principal methods used in this research are: the historical, musicological and source analysis, the descriptive, retrospective, and comparative. All of these methods are coordinated with the principles of the methodology, developed by Prof. Laszlo Dobszay and his school