За двойните мартирии в стихирарите със средновизантийска нотация от XIII и XIV вeк
On the Double Martyrias in the Sticheraria with Middle-Byzantine Notation from the Thirteenth and Fourteenth Centuries

Summary/Abstract: The present paper focuses on the so called double martyrias (analogous to modal signatures) – an exceptionally rare phenomenon found in music manuscripts with Middle-Byzantine notation. A supposition is made that along with the ordinary intermediary martyrias, the double ones were also used for notating the modulation processes known in Byzantine theory as phthorai (destroyers). A major source of double martyrias are the book collections of the Sticherarion type preserved in Bulgarian depositories. Two of them have been analysed: 1) CHAI 818 (13th c.) and 2) D. gr. 292 (14th c. from the CSBR “Prof. Ivan Duychev” at Sofia University “St. Kliment Ohridski”). The theoretical treatise of hieromonk Gabriel from the fifteenth century has also been used as an indirect source. During the research process it turned out to be possible to define and affirm the function of each of the martyrias as a constituent of the double: the martyria in the high position has the effect of phthorai (in the sense of a sign) that cancels the effect of the martyria in the low position. On the basis of this theoretical assumption, the modulation processes (rendered in notation as double martyrias) have been traced and analysed in a number of carefully selected songs. Certain arguments have been advanced for the indispensability of the double martyrias and the practices they describe. The present study rests exclusively on the author’s theoretical findings in two consecutive monographs dedicated to tetrafonia and trifonia, repeatedly cited in the text.

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