Mdivani �. G. Is a representative of Russian-Belarusian scientific and pedagogical musical school. As a theoretician of music, she is a disciple of Shkolnikov Leonid Efimovich and Kholopov Yuri Nikolaevich � graduates of the Moscow conservatoire, as a music historian � of Kuleshova Galina Grigorievna (under her tutorship, the diploma work �Songs of Edward Merike� by Hugo Wolf� was written at graduation from the conservatoire). The bases of the profession of musicologist were provided by Shkolnikov L. E., the skills of scientific research � by Kholopov Y. N.

In the candidate�s thesis, the following was discovered and described 1. specific tonality states (types of tonal structures, forms of tonality � floating (the term of �. Shenberg), fluctuating, multi-valued and withdrawn (the term of �. Shenberg), which, forming a system of atonicality, prepared dodecaphony and related non-classic style of musical thinking; 2. new principles of form-building, type of form (varied tonal, varied tonical, etc.); 3. new quality of elements of musical language (ambivalence, ambiguity, latency), as well as the following was done for first time 4. existing methods of European harmony analysis classified and characterized, and 5. special wider tonal method of analysis of late-romantic harmony created. Later these results were referred to by Y. Kholopov (1), Y. Moskva (2) and others.

The doctor�s thesis revealed the essence of avant-gardist musical thinking � rationalism, which was demonstrated in the form of non-classic rationalism (music of composers of the 1st half of the 20th century, or New music) and new non-classic (wider) rationality (music of composers of the 2nd half of the 20th century, or Newest music). Using synergy methodology (E. M. Soroko is the leading expert in the area) the possibility was proved to explain and understand such radical phenomena of Western musical avant-gardism (Bulez, Berio, Kage, Nono, Penderetski, Stockhausen), as paramusical or paramusical-theatrical genre (into paragenre system) � happening, action, installation, performance, instrumental theatre, graphical and special music, as well as intentions to incorporate in music the subconscious, intuitive, and piety to the East, which demonstrated a crisis of Western rationalistic concepts. The crisis was revealed by the uncertainty (�Indeterminacy� by Kage and �Xi� by Stockhausen) which symbolizes the bifurcation state of the �musical civilization� and the �progress music�, and movement towards restoration of integrity calocagation of music in its initial �numerical� (as per Plato � �. Losev) meaning (3).

The sphere of scientific interests of �. G. Mdivani includes the philosophy of music, theory and history of European and wider, i.e. Western (including American) music, culturology, as well as musical theory systems, genres and styles, composing techniques, textology, methods of study and understanding of the essence of the New and Newest music, music teaching problems (innovation aspect).