Traditional Belarusian folklore (songs sung at harvest, in particular) reveal layers of melodic mono- and polilexis. Respectively, those create special Jones – the isolates of the melodic relics that have been preserved by the original folk living in the area. There are also other zones – of the mixed, contaminational lexicon. Thus, the directions of migration and contact places of the three primordial areas of harvest-melodic types. Research in and on the zones of mixed lexicon brings abort a question of appearance or non-appearance signs of assimilation and signs of inter-ethnic «assimilation-resistance» in the musical-singing language. The author presents a variety of cultural-lexical cross-interference and interaction of the Uhr-Belarus ethnic groups. She defines co-relations, Baltico-Slavonic «shares» in formulation of singing-melodiaic language of the Belarusians.
Ad-stratic feature of the singing-melodiaic language is a result and, obviously, an evidence for the tri-ethnic composition of the old harvest-singing Belarusian culture. The melolexical data, namely, directionality and isomels’ density, existence of areas where «archaisms are conserved » and the existence of touch-contact zones – can be preliminarily correlated in terms of stratigraphy, and thus the time correlation is also possible, with the following:
1. archaeological cultures (Polesie, Soże and Niemien-Dźwina melolexes – and the culture zones of Miłograd, Zarubiniec and the one of the Hatched Ceramics culture); 2. linguo-dialectological division (entire Nemen and Sozh izomels, including the migration current , – vs. the zone of central-Belarussian dialects ); 3. ethnographic phenomena (female costume).