This dissertation primarily concerns performance aspects in compositions for piano and tape, using three specific works as the basis for discussion: Larry Austin's Sonata Concertante, Thomas Clark's Peninsula, and Phil Winsor's Passages. These compositions are representative of the medium as a whole, yet each offers its own unique set of performance problems.

Four works are selected to demonstrate the stature and demands of this craft and to represent a pinnacle in the art of contemporary woodwind doubling. Concerto for Doubles, by Thomas Filas, Concerto Tri-Chroma. by Michael Kibbe, Rhapsody Nova, by Clare Fischer and Suite for Solo Flute. Clarinet and Alto Saxophone by Claude Smith all represent rare, major solo works written specifically for three individual woodwind doublers. The paper will begin with a history of the practice of woodwind doubling from the fifteenth century to the present. The four works will then be examined by considering form, style and related performance practices.

This dissertation discusses two flute works by Joan Tower (born 1938). The performance medium consists of flute alone, Hexachords for Solo Flute (1972), and flute and orchestra, the Flute Concerto (1989). The discussion on Hexachords consists of a theoretical analysis; discussion on the Flute Concerto pertains to Tower's flute writing through an investigation into her musical language and specific performance techniques. Numerous examples are included to illustrate various aspects of Tower's style. Conclusions follow. The purpose of the paper is, first, to illustrate that basic knowledge of the twelve-tone method can bring a composition out of uncertainty for the performer and allow him to present what is unique within it. Secondly, it is to investigate the stylistic maturation of Joan Tower's flute works. In order to facilitate a better understanding of Tower's music and to provide commentary about the performance of each work, the writer has quoted from personal interviews with the composer and with flutists Carol Wincenc and Patricia Spencer, to whom the works are dedicated.

The paper is divided into six chapters. The first two provide a brief summary of the evolution of multiple percussion and biographical information about Kraft. The remaining chapters are an examination of the origin, sound sources, compositional style, and performance problems of the ten Encounters pieces. The paper concludes with several appendices, including a chronological listing of Kraft's compositions which use percussion, a list of percussion equipment and notational symbols used in the Encounters pieces, and a discography of Kraft's music.

El Polifemo de Oro was written in 1956 and revised by the composer in 1981. This two-fold investigation clarifies the structure of El Polifemo through careful analysis of the work and its revision, and by Smith Brindle's approach to composition based on his interviews and books. The second aspect is aimed toward the pragmatic performance issues of tempo, articulation, timbre, voice leading, and the other details of execution. Although the work was written according to serial techniques, the presence, in the twelve-note row, of triadic formations (minor triad, dominant seventh, fully-diminished seventh) juxtaposed with many tritone intervals suggests the use of tonal devices, which Smith Brindle does employ to effect tension and relaxation. It is assumed that tonal devices such as leading tones, stepwise movement in the bass, fourth and fifth relationships, and triadic constructions are heard against a traditional contextual basis and are therefore ways of implying resolution. Where tonal devices are not present, other structural components, i.e., rhythm, dynamics, timbre, etc., are examined with regard to their functions in creating or dissipating tension. Following the analysis of each of the four fragments is a discussion of performance implications based on the analysis. Both the analysis and performance aspects …