This dissertation provides a performance guide of Códigos Secretos for flute and electroacoustic sounds (2004) written by Gabriela Ortiz and commissioned by Mexican flutist Alejandro Escuer. Ortiz's compositional language reflects the influence of her teachers in Mexico and London, and the exposure to the evolving musical landscape during her formative years. Her decision to explore the electroacoustic realm stemmed from her fascination with the unlimited possibilities offered by working with a variety of acoustic sources and technological equipment that allowed her to experiment with different musical ideas, compositional processes and unique soundscapes. Códigos Secretos presents various challenges due to the absence of a preface or guide and several elements that may be unfamiliar to flutists, making it challenging or inaccessible to understand and perform the piece. The performance guide includes detailed explanations of the flute and computer scores, addresses discrepancies between different versions of the piece, and provides guidance on improvisatory sections and the execution of extended techniques. These elements enhance the performer's understanding of the piece and facilitate effective engagement and synchronization with the computer, enabling an artistic performance. The purpose of this dissertation is to inform performers and researchers about Gabriela Ortiz's compositional language, raise awareness about the diversity of Mexican music, and bring Ortiz's compositions to a broader audience, making her works more accessible.

Latin-American guitarist-composers Ernesto Cordero, Leo Brouwer, and Sergio Assad are three of the most influential figures in the contemporary world of classical guitar. In addition to their important compositions for solo guitar, their compositions for guitar ensemble represent significant contributions to the concert repertory. These three guitarist-composers share a knowledge of popular, folkloric and classical music and demonstrate a commitment to bridging these realms in their compositions in the classical tradition. This study reviews the history of the guitar quartet. It then examines the different cultural influences in selected compositions for classical guitar quartet by each composer, exploring the significance of these choices for the performer and for the medium. The document also offers a performer’s guide for accurate and stylistic performance. When performed well, these quartets represent the vitality of contemporary Latin American composition and confirm the stature of the guitar quartet as a compelling medium for the concert artist.

Solos for euphonium with electronic media present the unique challenge of incorporating an active, physical involvement in the live accompaniment through sound-altering technology such as guitar pedals or digital processors. Instructions for this solo genre are often vague and demand a general knowledge of how to use non-traditional devices. Due to the lack of information available on newly-composed pieces for this medium, students and professionals easily overlook the artistic merit of electroacoustic music. This dissertation provides a comprehensive performance guide that aids in the set-up and operation of advanced technology and presents a methodical approach to performing common musical and technical challenges found in modern euphonium repertoire with electronic media. Included in this dissertation are tables of common audio vocabulary and images of connectors, safety precautions, equipment recommendations with performance settings, a list of required connectors, adapters, cables, speakers, and amplifiers, performance set up diagrams, background information, and analyses of both the technical and musical aspects of each piece. In the appendices are signal flow charts, visual illustrations of polar recording patterns, and an updated catalog of published and unpublished original, adapted, and arranged euphonium solos with live electronics and electronic media accompaniment between 1970 and 2017.

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John Mackey is an influential and prolific composer of wind band literature. His focus on and exploration of the percussion section are defining characteristics of his compositional voice. Mackey's concerto for percussion and wind band, "Drum Music," is a perfect example of his exploitation of the myriad timbres available within the percussion family, and also serves to showcase the versatility required of a modern percussionist. This dissertation and accompanying lecture recital provide a comprehensive guide for performers of the work. Major aspects of Mackey's compositional approach are discussed with emphasis placed on his use of percussion throughout his works. Analysis and performance concerns are discussed for each of the concertos three movements, and information is provided on the reduced version of the work prepared as part of this study.

Gideon Gee Bum Kim is an internationally-acclaimed contemporary Korean-Canadian composer. Kim has utilized traditional Korean music with Western composition techniques in some of his works. Kim created his own style by incorporating traditional Korean musical elements such as the scale, rhythmic diversity, syncopation, variation, ornamentation, and the progression of melody into a body of music that is otherwise contemporary and Western. The purpose of this study is to develop a performance guide for Gideon Gee Bum Kim's Kangkangsullae for string trio. Kangkangsullae trio is based on Korean historical, cultural and musical influences. I give a detailed historical and cultural background for this work and demonstrate how Kim integrated Western compositional techniques with traditional Korean music. My emphasis is on defining specific characteristics of traditional Korean music which will provide several points toward understanding Kim's compositional style.

Leo Ornstein's most significant piano oeuvre, the Seventeen Waltzes, stand out as a unique example of a pianism as a foundation for the composer's musical thoughts. The purpose of this document is to provide musical and technical suggestions based on Ornstein's pianistic patterns, which will help pianists understand the composer's complex writing and form a coherent interpretation. The guide covers the main avant-garde musical devices used by Ornstein such as tone clusters, polymeter, and polyrhythm. A comparison process within the collection will help performers to address Ornstein's unmarked waltzes by underlining the composer's similar ideas and traits.

According to a recent United Nations report, China's population of 1.4 billion represents 19% of the world's entire population of 7.6 billion. As the distance between east and west contracts in business, so too do the arts. This dissertation focuses on six selected contemporary Chinese art songs composed by Nan-Chang Chien. By providing the references of musical facts, synopsis of the poems, word-for-word translation, IPA transcription, poetic translation, and interpretive and performance guides, singers and pianists will have an overall understanding and detailed directions for learning the Chinese language and Chinese art songs. This dissertation also provides the foundation and model for further exploration and research into Chinese art sing literature by scholars in the west.

Entr'actes and Sappho Fragments (1964) by English Composer Harrison Birtwistle represent extended notation, complex meters, and extended instrumental techniques. After World War II, the style and techniques of musical composition evolved considerably and musical trends began to continuously change. Conducting contemporary compositions requires new approaches in conducting methods. This paper examines a) introduce important elements of Birtwistle's compositions in the 1960, b) include an updated score of Entr'actes and Sappho Fragments (notated by the author), and c) provide a performance guide to the work.

This dissertation is a performance guide for the euphonium solos Pearls I and Pearls II, written by Roland Szentpali. This performance guide allows performers to better understand the jazz styles within each movement and provides them with a resource for performing these particular pieces as well as other jazz influenced pieces. This performance guide is specific to euphonium repertoire and written for euphonium performers and educators. This is also a resource for a solo work in the repertoire that is performed regularly as well as a new work that will soon be published. A brief history of the development of euphonium repertoire and the influence of jazz is provided. The performance guide analyzes each movement and provides insight to extended techniques, common performance problems, errata, and jazz styles that each movement is based on. The guide also provides several suggestions for interpretation and for performance preparation. Illustrations from the scores have been provided for each example.