Winter Landscape is an interactive composition for erhu (Chinese two-stringed fiddle), flute, piano, and Max/MSP interactive computer music system. The total duration of the piece is approximately 15 minutes. Winter Landscape serves to demonstrate one particular approach to exploring the possibilities afforded in an interactive paradigm within a cross-cultural context. The work is intended to convey my personality and identity as a contemporary Chinese composer through diverse cultural and musical influences drawn to this particular piece while creating a balance between traditional and modern sounds. The influences of Chinese philosophy (especially Chán) and the essence of Chinese traditional music play a prominent role as demonstrated in the formation of structures, expressions, and concept of Yun in the work; these influences also play a great role in determining the instrumentation and basic pitch structures of the work. However, this work is equally influenced by techniques and practices of modern Western classical music. These diverse influences hopefully have resulted in a unique work that truly does represent a cross-synthesis of these varying influences. In Winter Landscape, the interaction that takes place between the computer and the live musician is intended to reveal the responsive human/machine relationships. The computer constantly shifts its roles as a musical instrument, conductor, performer, and improviser to facilitate the sonic realization of the solemn, nebulous, and peaceful nature of Chán philosophy, thus exploring the cultural and musical potentials; meanwhile, the design of algorithmic structures simulate the modeling of human performance, enabling the computer with intellectual ability and musical expressivity as a decision-maker, resembling its counterpart-the live performer.

O objeto desta tese é um método particular de investigação e criação artística denominado Cut App & Play, no qual procedimentos criativos advindos da prática da dança e da coreografia são aplicados em interfaces digitais de composição audiovisual. A hipótese apresentada é que este método engendra um sistema metacoreográfico, que além de promover um processo coreográfico automatizado, também gera reflexão, análise e crítica em relação à linguagem não verbal do movimento. Para o desenvolvimento do método foram feitas análises de estudos precedentes nos quais o pensamento coreográfico foi aplicado por meio de diversos meios e linguagens. O aplicativo Autograph foi implementado como parte prática deste trabalho de forma a proporcionar ao leitor uma experiência com o método Cut App&Play. Sua poética particular se baseia na identificação de padrões dinâmicos no movimento de escrever uma frase à mão e na tradução destas dinâmicas para uma dança virtual. / The subject of this thesis is a particular research and artistic creation method named Cut App & Play in which procedures from dance and choreography practices get automated in digital audiovisual composition interfaces. The presented hypothesis is that this method articulates a metachoreographic system, which along with presenting an automated choreographic process, it also generates reflection, analysis and critique in relation to the non-verbal language of movement. Previous studies on applied choreographic thought in a variety of media and languages were undertaken for the development of the method. Autograph, is an applied version of the Cut App&Play method and has been implemented as a practical counterpart of this work. Its poetic proposition is based on the operation of translating movement dynamics from manually writing a sentence, into a virtual dance.

La version intégrale de cette thèse est disponible uniquement pour consultation individuelle à la Bibliothèque de musique de l’Université de Montréal (www.bib.umontreal.ca/MU). / Cette thèse présente la démarche compositionnelle relative à six œuvres de musique mixte interactive pour hyper-flûtes, soit des flûtes traversières munies de capteurs gestuels électroniques reliés à un ordinateur. Le jeu instrumental est ainsi augmenté par des composantes électroacoustiques qui peuvent être contrôlées par l’interprète. Une grande partie de cet ouvrage est consacrée à la recherche autour de ces œuvres. On peut y lire un bref historique de la musique mixte qui souligne l'apport de la flûte à la musique électroacoustique. On se penche sur les défis de synchronisation du son instrumental et électronique auxquels font face les compositeurs depuis les années 1950, pour ensuite déterminer en quoi consiste la composition interactive. Après avoir défini la notion de geste instrumental, en particulier en ce qui concerne le jeu de la flûte traversière, on aborde les détails de la lutherie électronique de l’hyper-flûte et de l’hyper-flûte-basse. Ces descriptions techniques sont précédées de commentaires sur différents instruments augmentés et spécifiquement sur les différentes flûtes connues. Cette partie se termine par un exposé concernant l’interaction et les stratégies de mappage des données gestuelles vers les correspondances sonores. La suite est consacrée aux compositions. On peut d’abord y lire mon point de vue sur la composition interactive et l’improvisation. Six chapitres décrivent ensuite en détail chacune des œuvres. On y présente les sources d’inspiration et une analyse formelle sommaire de chaque pièce, puis on élabore sur les composantes instrumentales et électroacoustiques, en explicitant les types d’interactions utilisés. Soulignons que quatre de ces œuvres ont été élaborées autour de textes poétiques. Finalement, une courte conclusion résume les objectifs artistiques réalisés dans le cadre de ce doctorat et les pistes envisagées pour la poursuite de mon travail créateur avec les hyper-flûtes. / This dissertation presents the compositional processes of six pieces with live interactive electronics for hyper-flutes: flutes equipped with electronic motion sensors connected to a computer. Instrumental techniques are thus augmented by electroacoustic components that can be controlled by the performer. A significant portion of this document is focussed on the research framing these works. A brief history of «musique mixte» is presented, underlining the contribution of the flute to electroacoustic music. The challenges associated with the synchronization of instrumental and electronic sounds with which composers have been faced since the 1950’s are then addressed, providing the context for establishing the essential nature of interactive composition. After having defined the notion of instrumental gesture, particularly as it concerns flute techniques, details of the electronic design of the hyper-flute and the hyper-bass-flute are considered. The descriptions of these techniques are prefaced by observations about other augmented instruments and more specifically the different known flutes. This part concludes with a presentation of the interaction and mapping strategies of gestural data as it relates to the corresponding audio elements. The sections that follow focus attention on the compositions. I begin by elaborating my own perspective on interactive composition and improvisation. Six chapters then provide detailed descriptions of each of the pieces, starting with the sources of inspiration and a brief formal analysis. I go on to explain their instrumental and electroacoustic components, detailing the types of interactions used. Of particular note is the fact that four of these works were developed based on poetic texts. Lastly, a short conclusion summarizes the artistic objectives realized during my doctoral tenure as well as the potential opportunities for the continuation of my creative work with the hyper-flutes.