Abstract: This article is dedicated to the history of the written form of the well-known church tune – the heirmoi of the Sunday canon of the 6th tone, from the manuscripts of XVII-XVIII centuries until present-day publications of the tune. While comparing different sources of this tune, differences in its variants were discovered, it was shown how the tune changed over time, as it was in different regions in the same time period – i.e., synchronic and diachronic methods of research were used in the study. For clarity, an analytical score of the heirmos of the first song of the canon was compiled, in which the similarities and differences of the tunes are visible, the tendency to reduce the melody of the tune over time. It is noteworthy that the chant has retained some similarity of variants in sources of different types: these are handwritten singing Obikhods, written in znamenny notation, and notolinear Irmologions that came from the Ukrainian and Belarusian lands; Synodal publications of Obikhod and the Octoechos of two editions: 1772 and 1890s, four-part singing editions of the early twentieth century and the present-day sources. In the reduced version of the melody of the znamenny chant, several melodic formulas have been preserved, which sound in a polyphonic presentation. The revealed similarity of the components of the chant in the sources of different times and localities allows us to speak about the continuity of the Orthodox liturgical singing tradition.
Orthodox liturgical singing tradition, irmos of the Sunday canon of the 6th tone, znamenny chant, Kievan chant, comparison of variants, singing Obikhods and Irmologions, znamenny notation, five-line notation, polyphonic presentation of the traditional chant, preservation of melodic formulas.
*According to the International Standard Classification of Education (ISCED) 2011, the degree of Candidate of Sciences (Cand.Sc.) belongs to ISCED level 8 — "doctoral or equivalent", together with PhD, DPhil, D.Lit, D.Sc, LL.D, Doctorate or similar.
I express my gratitude to the head and staff of the Faculty of Church Singing of the Orthodox Saint-Tikhon University for organizing the church singing section of the Annual Theological Conference and the opportunity to speak at the meeting on January 27, 2023.