The purpose of this study is to analyze the first movements of Sergei Bortkiewicz's two piano sonatas and compare them with works by other composers that may have served as compositional models. More specifically, the intention is to examine the role of the subdominant key in the recapitulation and trace possible inspirations and influences from the Classical and Romantic styles, including Mozart, Beethoven, and Schubert. The dissertation employs Schenkerian analysis to elucidate the structure of Bortkiewicz's movements. In addition, the first movement of Mozart's Piano Sonata K. 545, Beethoven's Coriolan Overture, and the first movement of Schubert's "Trout" Quintet in A, D. 667, are examined in order to illuminate the similarities and differences between the use of the subdominant recapitulation by these composers and Bortkiewicz.

This dissertation is divided into six chapters. The first chapter explains the purpose and significance of the study. The second chapter presents an analysis about Wanderer Fantasy, D.760 composed by Schubert, employing Schenker analysis to elucidate important motives. Chapter 3 provides an analysis of Schubert-Liszt, Wanderer Fantasy for Piano and Orchestra, S. 366 and shows how Liszt transcribed the original to emphasize certain motives, and further, describes the development of the piano history. Chapter 4 delves into an analysis of Schubert-Liszt, Wanderer Fantasy for Two Pianos, S. 653a transcribed by Franz Liszt and further explains the historic development of piano, in particular Érard's grand piano. Chapter 5 explains the analysis of Schubert-Liszt, Wanderer Fantasy for Piano Solo, S.565a and expands upon Érard's grand piano. Finally, Chapter 6 leads to this paper's summary and conclusion.

The underrepresentation of Mexican art song has left classical singers with few Spanish-language repertoire options. Currently, the music of Spain dominates this scene and Mexican art song has yet to earn a place in academic curricula and concert halls. Manuel María Ponce (1882-1948) retains an important position in Mexican music. However, Ponce's vocal repertoire—consisting of over 150 songs—remained dormant for many decades after his death due to its misclassification by music aristocrats in Mexico that greatly affected their diffusion. Consequently, few copies were published during Ponce's life, making them difficult to find. The need in the singing community for repertoire of this kind has raised many questions not only about its existence and availability, but also about its origins and relationship to the established Art Song canon. To promote the diffusion of this underrepresented repertoire, a style analysis of Ponce's Romantic Mexican Art Song is offered through the lens of his writings about Mexican Song. The analysis includes vital information about the origins, form, style, and subjects of these songs. Tangible examples of these traits are provided from Ponce's Doce Canciones Mexicanas along with historically-informed suggestions for singers and translations of the text with IPA transcriptions.