Improvisation is an art form which has arguably been present since the existence of music itself. Inventing music on the spot, like spontaneous speech, is a common expression of artistry throughout history and across musical boundaries. While improvisation has maintained its importance in jazz, classical organ music and the music of many eastern cultures, this dissertation will focus on the presence of improvisation as acceptable performance practice within the tradition of western classical music. At several points in history, this musical tradition was encouraged and even expected to be a regular part of a musician's life, and yet in the classical music tradition of the twenty-first century, improvisation is rarely, if ever, heard from the concert stage, nor is it regularly included in the general education of the conservatory student.

The early stage of piano students' training is one of the most important, because it is then that they establish their habits for life. Those who teach beginners need clear principles for developing a solid technical foundation and for preventing bad technical habits. One of the most difficult principles to inculcate in young students is that of tone production and quality. The primary purpose of this study is to provide a pedagogical guide to help piano teachers teach tone production to elementary-level students. To accomplish this purpose, the strategies of the twentieth-century pedagogues Josef Lhévinne, Josef Hofmann, and Heinrich Neuhaus are examined, and applied to the elementary-level piano literature. This study offers practical training suggestions to teachers of elementary piano students as well as musical examples from high-quality piano literature to accompany these suggestions.

Bohuslav Martinů's "Concerto for Oboe and Small Orchestra" is one of the most frequently played pieces in the oboe repertoire. For this reason, it is often played with the piano reduction instead of the orchestra in oboe recitals. However, the existing piano reductions include many errors and discrepancies from the orchestral score, misrepresent the orchestration, sometimes fail to make the oboe entries clear, and tend to be unplayable for pianists. Moreover, the scores were published after the composer's death without him supervising the final editing. I have prepared a new, playable piano reduction to represent the orchestration more faithfully and help pianists work with their soloists more easily. Based on the work of Martin Katz, a prominent collaborative-pianist, I establish four principles for creating a new piano reduction. After scrutiny of the deficiencies of existing piano reductions, I suggest solutions for making the passages in question practical and bringing out the leading voices clearly so that the soloist can join in as easily as playing with an orchestra. To aid in reflecting the orchestral texture that Martinů created, I include abbreviated instrument names in many passages to help pianists to understand how to create balance. I have changed some passages …