Phenomenon of Melodic Changes in the late Medieval Notation of Jan Olbracht Gradual on the Example of Antiphon ad Mandatum „Si ego Dominus et Magister”
Phenomenon of Melodic Changes in the late Medieval Notation of Jan Olbracht Gradual on the Example of Antiphon ad Mandatum „Si ego Dominus et Magister”

Summary/Abstract: The article presents melodic transformations of the antiphon ad Mandatum “Si ego Dominuset Magister” recorded in one of the most valuable Polish monuments of the late MiddleAges, Jan Olbracht Gradual (PL-Kk 43, AKKK). The analysis of transformations was carriedout on the basis of comparison with adiastematic notation of the discussed antiphonin Hartker Antiphonary (CH-SGs 390) and its melodic restitution in Graduale Novum.Conducted research led to establishing the identity of the version of the antiphon recordedin Olbracht Gradual and identifying basic differences from versions of the chant noted in oldermanuscripts, such as changes in the relationship between sounds, the use of larger intervalsand change in tonal attribution of the antiphon.

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