This expanded scientific article explores the intricate layers of music theory, focusing on the transition from modal polyphony to functional harmony. It provides a deep-seated analysis of the hierarchical structure of tonal functions, the expansion of dissonance in classical harmony, and the dialectical development of the sonata-allegro form. The work also examines the relationship between musical syntax and the psychological perception of structural boundaries, providing a comprehensive theoretical framework for understanding Western classical composition.
Rustam Abdullayev (2026) studied this question.