Abstract: The article considers stylistic features of the works by modern Welsh composer Karl Jenkins on the example of the monumental cycle "Stabat Mater". The author analyses the elements of musical language, timbre dramaturgy as means of creation of multiple associative connections. Particular attention is paid to the issues of unity of the author's style in the context of polystylistics. The article highlights the qualitative characteristics of the musical content and traces the patterns of development of thematicism and the principles of form creation. It also demonstrates the peculiarities of polystylistic techniques, the combination of intonational and structural elements of Baroque with the modern genre basis, the inclusion of the ethnic component. To obtain an objective result, the author uses methods of theoretical analysis of thematicism and musical forms, analogy and a method of comparative analysis, systematization of observations and generalization. The main conclusions of the study are the formulated principles of Jenkins' polystylistics at the level of interpretation of the genre, musical language and technique of composition. The article could be of interest to both music scientists and a wide audience interested in contemporary music.