The Concierto Romántico for Piano and Orchestra is one of Manuel M. Ponce's outstanding compositional accomplishments from his Romantic period, reflecting both the state of Mexican music at the turn of the 20th century, and his early nationalist tendencies. However, it remains the only concerto in Ponce's output in need of a more comprehensive analysis. This treatise focuses on a global investigative that examines descriptive and analytic references to the work, as well as a comparison and clarification of the existing score sources. An analytical and stylistic musical study using conventional theoretical techniques leads to a musicological interpretation of the work's extra-musical meaning, based on close assessments of Ponce's compositional practice and social principles.

The aspiration of this dissertation is to bring forth the significance of Shostakovich's Piano Sonata Op.12. This sonata is a hybrid of the German musical tradition, Russian Modernism, and Liszt's thematic transformation technique. It demonstrates Shostakovich's highly intellectual compositional skills influenced by the education that he received at St. Petersburg Conservatory as well as the exposure to modern music in the 1920s. This dissertation discusses composition techniques, such as the harmonic piers adapted from Alexander Scriabin, neighboring-tone technique, which involves the application of semitone cell throughout the piece, as well as the technique of thematic transformation borrowed from Liszt. These all come together by Shostakovich's design in the most controversial sonata form. The Piano Sonata Op.12 also sheds light on Shostakovich's early compositional style and proves its contribution to the evolution of sonata genre in the twentieth-century.