Astronomy and music are both fundamental to cultural identity in the form of various musical styles and calendrical systems. However, since both are governed by incontrovertible laws of physics and therefore precede cultural interpretation, they are potentially useful for insight into the common ground of a shared humanity. This paper discusses three compositions inspired by different aspects of astronomy: Solstitium e Equinoctium, a site-specific composition for four voices and metal pipes involving an inclusive communal musical ritual and sonic meditation; Helios, a short symphonic work inspired by helioseismology; and Perspectives, a piece for soprano and percussion based on a logarithmic map of the universe.

In Part I of this thesis, I examine the use of Latin American rituals, ceremonies, and traditional folklore as conceptual and compositional material; studying and re-contextualizing concepts, cultures, and ideologies, and introducing them to foreign audiences. I explore issues such as laptop improvisation, interaction with other performance forces, and the utilization of the social elements of non-western celebrations, as explored in Clestrinye, a work for live and fixed electronics, mixed ensemble, dancers, and painters.

Galileo's Eyeglass is a celebratory work for full orchestra with standard instrumentation commemorating Galileo Galilei's discoveries of the four largest moons of Jupiter and the rings of Saturn in 1610. The composition is approximately 14 minutes in duration, and although divided thematically into four parts, the music is continuous. The work exhibits primarily a blend of contemporary styles and compositional elements, yet it is rooted in traditional tonality; furthermore, the piece is interspersed with references to Galileo's life and times, including quotations of a toccata composed by the scientist's brother, Michelangelo Galilei, transcribed from lute tablature. Chapter 1 of Part 1 investigates relevant historical threads extracted from the backdrop of Galileo's life, from reflections on the events that shape the musical program, to the selection and preparation of the period music composed by Galileo's brother. Chapter 2 discusses specific musical components of Galileo's Eyeglass, including form, musical quotations, motivic and thematic material, harmonic language, orchestration, and notation. Chapter 3 examines the principal philosophical themes behind the composition, including expressions of victory of a life well lived in spite of many obstacles. Part 2 contains the orchestral score.

Performances of multimedia works are hampered by the difficulty of controlling large numbers of incandescent lamps rapidly and accurately. The instrument described in this document is aimed at alleviating this problem. Chapter I describes the design and operation of the voltage-controlled dimmer unit and the DC controller. Chapter II describes step-by-step procedures for building the instrument. Schematics, wiring diagrams, and illustrative photographs are included. Chapter III discusses some of the aesthetics and philosophy of multimedia composition, and then describes various scenarios which utilize the instrument. Included are the connection of peripheral control equipment, audio/Video interfacing, and the potential for constructing prepared tapes which will automatically drive the dimmers. The prototype was built at the NTSU Electronic Music Center.

Chronomorphosis is a chamber ensemble piece for flute, clarinet, viola, cello, piano, and percussion. The work, comprising three movements is approximately fourteen minuted in duration. One of the most apparent characteristics of the work is its progression from non-metrical time organization involving aleatoric elements to metrical time organization involving changing meters but no aleatoric elements. The Pitch set is a constant element throughout the piece. The instrumentation selected exhibits a variety of color in all ranges: the flute in the upper register, the clarinet, viola, and vibes in the middle register, and the cello and the timpani in the lower register, the piano having access to all registers.

Concertino consists of two movements, Paean and Dithyramb, either of which may be performed independently. Paean, a work of calm and majestic intensity, is characterized by a rhythmic pulse which is more consistently regular than that of the Dithyramb. Its three major sections form an arch, the final measures (mm. 87-95) returning to the material of the opening (mm. 1-14). The first section begins quietly, Maestoso ma sostenuto, in a very slow tempo. The activity and intensity increase until a brief, more active middle section begins in a faster tempo (Ancora piu mosso, m. 55). A fff climax (m. 63) begins in the third section (Tempo I). After a brief poco piu mosso (mm. 72-81), the opening tempo is restored (m. 82), the opening material returns (m. 87) and the final chord fades away. Dithyramb is a free and dramatic movement in which the musical material of the wind group usually contrasts with that of the string group. The piano, which has its own material, occasionally takes on the character of one group or the other as though mediating the conflict.

This composition is a single-movement work for three choirs and full orchestra, including celesta, piano, and four percussionists. Total duration is fifteen minutes. The music is divided into six sections, with the overall form being substantially influenced by the structure of the poem, War Is Kind, by Stephen Crane (1871-1900). Many devices are utilized to contrast tension and relaxation, as associated with ironic elements of the text, with repetition and development of musical elements and motives providing unity for the entire work.

A body of works titled 'capriccio' have existed for over four hundred years. Most of these works are characterized by a composers abandonment of expected stylistic norms. Guided only by the fanciful whim of the composer, a capriccio exhibits extreme contrasts in the various parameters of a musical composition including melody, harmony, counterpoint, mood and texture. The composition embedded in these compositional parameters as its point of departure and development.

"A Voice Crying In The Wilderness," an opera in two acts, is written for baritone soloist (John) and chorus with minor singing roles for two sopranos, mezzo soprano, tenor, a major speaking role for male falsetto voice, and three lesser speaking roles for tenor voices. Members of the chorus are required to play an assortment of percussion instruments and must be able to dance in contemporary modern dance styles. The opera is scored for large string orchestra, amplified solo viola, two electronic "digital" keyboards, and a large assortment of percussion instruments. (The keyboard scores were conceived using the "CZ-1" model digital synthesizer by Casio and the "KORG DW 8000" digital synthesizer.) The opera is divided into two acts and is approximately 80 minutes in duration. Each act consists of a combination of very broad scene complexes made up of dances, recitatives, choruses, instrumental interludes, arias, and rituals. There is a short intermission between the two acts.

Rete Mirabile is my new installation piece combining scientific principles with live computer generated music. The title is a Latin term meaning "Wonderful Net," which I use to refer to the highly convoluted network of biological data that drives my installation. The sonification of data, computer modeling of biological processes, kinetic sculptures, and user interactivity are central parts of the installation. The paper is organized as follows: First, brief history of the forerunners that inspired my work is given. This includes a short discussion on how John Cage and David Tudor influenced current artists works, and how those works have influenced my own work. Then I review current installation works that share similarities with my own. Finally, a detailed discussion and analysis of the construction and function concludes the paper.

Reference to a regular pulse is one of the most common ways of measuring time in music. As the basis for tempo, meter, subdivisions, and even formal symmetry, pulse, or the sonic articulation of regular units of time, is found throughout all levels of music. In this paper, I describe how I used a structure of twelve simultaneous pulses to compose "Monolith," a recent piece for MIDI piano, Pierrot ensemble, and fixed electronics. In the first chapter, I contextualize "Monolith" by briefly examining pulse's relationship to hierarchical structure in music and the possibilities for creativity in pulse-based hierarchical structures. In the second chapter, I analyze the use of pulse in Steve Reich's "Music for 18 Musicians," György Ligeti's "Self-portrait with Reich and Riley (with Chopin in the background), and Conlon Nancarrow's "Study No. 36 for Player Piano." In the third chapter, I describe in detail the relationship between the twelve-pulse structure and the various movements that comprise "Monolith," focusing on the relationship between compositional freedom and prescribed structure throughout the work.

This paper provides an overview of the inspiration, research, and creative process involved in the composition of EverWind for orchestra and electronics. EverWind is based on field recordings from the American Southwest. The composition uses pitch material derived from spectral analysis of the recordings, and it incorporates a fixed media element using the field recordings that are then electronically manipulated to various degrees; this fixed media element is played alongside the orchestra. The paper also analyzes John Luther Adams' Dark Waves for Orchestra and Electronics and R. Murray Schafer's Music for Wilderness Lake in order to place EverWind within the broader musical context.

This document accompanies and explains the concepts used in the development of the composition, East is East, and West is West, (and Never the Twain Shall Meet). The process for generation and development of much of the musical content of the composition East is East, and West is West, (and Never the Twain Shall Meet) is the use of quoted musical materials. The second process, but equally as important, for development of the composition relies heavily on the idea of parallel development of modular ensembles and how the interactions created between them by sharing instrumentation can be a tool for development, as well as a challenge to the development of each module. Each module has an influence on at least one other module and is also influenced by at least one other module, creating a puzzle of interactions that must be navigated carefully when generating each individually. Both quotation and modularity are concepts employed by other composers, so this document also briefly explains how other composers have approached these concepts in their works in order to establish a historical relationship within the canon of western classical music to East is East, and West is West, (and Never the Twain Shall …

In the first half of the twentieth century, sporadic attempts of avant-garde composers to include sounds other than pitch in musical composition paved the way for the composers in the second half to embrace the sound of all types in their creative works. The development of technology since the mid-past century has facilitated composers' inclusive use of sound. The recent achievements in electronics and computers have led to cost-effective tools for today's composers to explore new possibilities in sound design and manipulation. Gradual for tenor saxophone and fixed electronics is primarily concerned with noise. Among the infinite possibilities of noise types, metallic sounds significantly contribute to the composition. The title of the piece refers to the compositional process in which the music progressively unfolds itself from the beginning to the end. The methods and strategies used to present the content give rise to a form I call accretion, described as an organic process by which the musical materials grow. Within the process, while established materials are interacting, combining, and forming layers, new materials may be incorporated and take part in the process. Throughout the composition, the interaction between sounds with common properties guides the music toward interactive unity, while the …

Audiovisual concatenative synthesis is an analysis-driven granular technique using a corpus of multimedia data to sequence audio and video streams on a microtemporal level. This text outlines my development of this technique as a tool for multimedia composition, using my work, Replica, as a case study. The paper illustrates how the concepts of granular structure, gesture capture, and replication are integral not only to the software but to the architecture of the composition. In doing so, machine learning approaches to music and visual art are reviewed and related to my personal compositional practice. Additionally, I attempt to show how audiovisual concatenative synthesis provides a composer with strategies for shaping one's sense of time through disorienting audiovisual cues and tightly organized counterpoint between sound and image, stage and screen, and the real and virtual.

"Natural Disasters" is a cycle of five extractable movements for septet, conductor and computer. Each movement in the cycle is inspired by the ways that humans are affected by and respond to five different classes or categories of natural disasters: meteorological, such as hurricanes, tornados, and haboobs; geological, like earthquakes and landslides; hydrological, including flooding and sea level rise; wildfires; and extra-planetary disasters such as meteors and solar flares. The disaster types are used as overarching themes and also as sources for the organization of the movements and their surface details. This paper presents an overview of the conception and organization of cycle, the themes addressed in each movement and the compositional techniques used. The history of composers using weather or disaster-related themes in prior music is reviewed, and a survey of contemporary disaster-related compositions is presented.

Candy Chang developed a public art installation where people are given the opportunity to write their answers to "Before I Die I want to ________." in a public space. I created one of these walls in Denton, TX and set it to music in a 12 minutes and 42 second piece titled Before I Die..., which combines elements of South Indian carnatic music, gospel, R&B, jazz fusion, and minimalism. The composition was influenced by the music of several crossover artists Becca Stevens, Michael League (Snarky Puppy), Nico Muhly, Poovalur Sriji, Tigran Hamasyan, and James Blake. Crossover music, fusion, and third-stream are all synonymous terms used to describe music where multiple genres or styles are authentically combined. The purpose of this thesis is to examine the balance of musical elements in crossover works as well as how specific works composed by the artists mentioned have influenced the creation of the Before I Die... piece.

"Concerto for Piano, Winds, and Percussion" is, as the title implies, a piece which features the solo piano in combination with an ensemble of winds and percussion. The instrumentation of the ensemble is two flutes; oboe; two Bb clarinets; Eb alto clarinet; Bb bass clarinet; bassoon; two Bb trumpets; two F horns; two trombones; baritone; tuba; and a percussion section of three players playing timpani, tambourine, xylophone, vibraphone, glockenspiel, chimes, triangle, suspended cymbal, snare drum, bass drum, two bongos, and small woodblock. The major sections of the piece are distinguished primarily by tempo. The fast-slow-fast arrangement of those sections aligns it with the traditional concerto format. The piece is in one movement and is approximately twelve and one-half minutes in duration.

Promulgation is an interactive composition in which the orchestra and computer communicate through musical motives contained in the Command Motive Score. The musical content as well as the highly organized aleatoric environment is controlled by a system of probabilities. The orchestra is divided into four ensembles of dissimilar instrumentation. The music consists of several scores that are performed different ways. The first score is the Command Motive Score performed by the computer. The second is the Prelude Score performed by the orchestra. The third is the Continuum Score performed by the orchestra. The fourth is a group of scores called Auxiliary Scores performed by each respective ensemble. The fifth is another group of four scores performed by trumpet, cello, piano, and tuba.

Examines the use of vernacular, country guitar styles in an electro-acoustic environment. Special attention is given to performance practices and explanation of techniques. Electro-acoustic techniques-including sound design and spatialization-are given with sonogram analyses and excerpts from the score. Compositional considerations are contrasted with those of Mario Davidovsky and Jean-Claude Risset with special emphasis on electro-acoustic approaches. Contextualization of the piece in reference to other contemporary, electric guitar music is shown with reference to George Crumb and Chiel Meijering.

Till Millennial Kingdom is a single-movement composition, eleven minutes in length, combining a trumpet, three percussionists, and tape. Throughout this text, use of the word "tape" will refer to pre-recorded audio on compact disk. This is also a programmatic composition, in that it uses music to depict a non-musical event. The form and instrumentation of Till Millennial Kingdom create a musical depiction of natural and supernatural events as they relate to biblical prophecy. The trumpet makes a significant thematic contribution throughout the work and particularly during the end of the piece. The use of percussion grants an element of rhythmic agitation, and the tape part provides a musical canvas upon which all sonic elements of the work are arranged. The combination of percussion and electro-acoustic gestures represents the programmatic concept of wrath and tribulation. Ironically, the closing stages of this work musically represent the beginning of eternity.

The Prayer of Daniel is a chamber piece in the style of an oratorio for vocal bass-baritone soloist, flute doubling on alto flute, B flat clarinet doubling on bass clarinet, violin, cello, piano, percussion on vibraphone and marimba, doumbek (a middle eastern drum), and men's chorus (TTBB). The approximate duration is thirty minutes. The text comes from the Old Testament book of Daniel, Chapter 9 verses 4 through 19. In these passages the prophet Daniel rends from his heart a prayer of repentance, mercy and forgiveness on the behalf of a fallen nation. The harmonic language of the composition combines both classical contemporary and jazz sonorities. The rhythmic language is drawn from the meter of the text, and is used to underscore the emotion of the prayer. These elements combine to form a rich music experience that conveys the penitent heart of the prophet Daniel.

Concertino for Tuba, Winds, and Percussion is a work for solo tuba and an ensemble consisting of two flutes, two oboes, two clarinets, bass clarinet, bassoon, four horns, two trumpets, two trombones, bass trombone, and three percussionists. The percussionists play small, medium, and large suspended cymbals, triangle, tam tam, metal wind chimes, five tom toms, snare drum, tenor drum, bass drum, two sets of two timbales, five temple blocks, maracas, glockenspiel, vibraphone, chimes, xylophone, marimba, and five timpani. The three movements of the work follow the arrangement of the standard concerto format (fast-slow-fast). The lengths of the movements are approximately four minutes and fifteen seconds, two minutes and twenty-five seconds, and four minutes and ten seconds respectively. The total duration of Concertino is about eleven minutes.

Kidrish Fields, a pastoral fantasy, is scored for seven flutes, vibraphone, and cello. The duration of the work is eighteen minutes. The 62 pages which precede the musical score present a discussion and an analysis of the composition. The purpose of this project was to provide the composer an opportunity to apply polyphonic writing techniques within a score orchestrated for an ensemble of like instruments.