The late chromatic music of Chopin is often difficult to analyze, particularly with a system of Roman numerals. The study examines Schoenberg's Grundgestalt concept as a strategy for explaining Chopin's chromatic musical style. Two short Chopin works, Nocturne in E-flat major. Op. 9, No. 2, and Etude in E major, Op. 10, No. 3, serve as models in which the analytic method is formulated. Root analysis, in the manner of eighteenth-century theorist Simon Sechter, is utilized to facilitate harmonic analysis of chromatic passages. Based upon the analytic method developed, the study analyzes the last three polonaises of Chopin: Polonaise in F-sharp minor, Op. 44, Polonaise in A-flat major, Op. 53, and Polonaise-Fantasie in A-flat major, Op. 61. The Grundgestalt-based analysis shows harmonic, melodic and rhythmic connections in order to view Chopin's chromaticism and formal structure from a new perspective. With this approach, the chromaticism is viewed as essential to the larger form.

This study is an investigation of tonal structures in selected preludes of Shostakovich's Op.34. Explanations and analytic perspectives provide support of tonality oriented interpretation for the compositions which often appear to be "atonal." Chapter One is divided into (1) historical perspectives of the prelude as form, and (2) Summary of Shostakovich's life and work. Chapter Two contains a historical background of (1) the development of Shostakovich's compositional styles, emphasizing his early style of piano composition, and (2) the impact of his "Lady Macbeth," the crisis and its influence on later works. Chapter Three deals with the problems of and analytical approaches in the study of the selected preludes.