The purpose of this study is to define the French sonatina of the twentieth century, to expose those works which are most suitable for concert performances, and to provide a resource for teachers and performers. Of the seventy-five scores available to the writer, five advanced-level piano sonatinas of the twentieth century were chosen as the best of those by French composers, in attractiveness and compositional craftsmanship: Maurice Ravel's Sonatine (1905), Maurice Emmanuel's Sonatine VI VI(1926), Noel Gallon's Sonatine (1931), Alexandre Tansman's Troisieme Sonatine (1933), and Jean-Michel Damase's Sonatine (1991). The five works were analyzed, with a focus on compositional techniques used to create unity in the work. In comparison to the classical model of the late-eighteenth and early-nineteenth centuries, the French sonatina of the twentieth century exhibits four new features. First, it is more expansive in length and has greater philosophical depth. Second, there is an emphasis on unity at the motivic and thematic levels in which the development of material, based on the techniques discussed, occurs throughout a movement instead of being limited to a "development" section. Third, the formal structures are more flexible, allowing for cyclic quotations and the accommodation of varying styles. Fourth, the advanced technical skills …

Paul Wittgenstein (1887-1961) made significant contributions to the piano literature for the left hand through numerous commissioned works as well as his own transcriptions. In the transcriptions, Wittgenstein preserved the texture of two-hand music, aiming for the simulation of the original works. This requires special techniques in the performance by the left hand alone. This dissertation investigations technical means and performance problems associated with the transcriptions as well as Wittgenstein's own recordings of selections from his works. Chapter 1 serves as an introduction, providing a historical overview of the role of the left hand in two-hand piano literature. Chapter 2 gives biological information on Paul Wittgenstein and discusses the commissioned works. Chapter 3 investigates special techniques in the transcriptions, in the areas of arpeggios, widespread chords, fingering, pedaling, and others. Chapter 4 discusses Wittgensteins's performance style based on his recordings. Chapter 5 presents a conclusion pointing to the benefits of performing left-hand music in two-hand piano playing.