This commentary details the methods and ideas involved in creating the seven portfolio works. The portfolio is comprised of stereo acousmatic works, one mixed work and a multi-channel work, forming the practice-based research completed during the PhD programme at the University of Manchester. The works explore a number of aesthetic concepts encompassing instrumental timbres, cultural sound objects, rhythm incorporation, habitual spaces (the kitchen), imaginary and real objects (jukebox), and visual art sculpture (origami). Uniting the portfolio works is the use of Denis Smalley’s spectromorphology (1997). In its intended function, this tool provides the listener of electroacoustic music with thorough and accessible sets of vocabulary to describe sound events, structures and spaces. The use of this descriptive tool need not stop here. Fortunately, and often unconsciously for the composer, it does not, since all composers create music that is spectromorphological with or without an awareness of its presence at work. In a reversal of conventional practice, my research approaches spectromorphology from an alternate angle, viewing the vocabulary as the informer upon sound material choice and creation. In this reversal, vocabulary no longer functions descriptively; instead the vocabulary precedes the composition, directing my compositional pathway in each piece. This new application, used as a method for selecting and creating sound in the creation of each portfolio work, is an attempt at systemisation and an effort to partly remedy the seemingly endless choice of possibilities we are faced with when beginning a new work.

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There is an arguable lack of activity and interest in the analysis of electroacoustic music when compared to its composition and performance. The absence of a strong and active analytical community is very concerning, as it should be a fundamental part of any larger musical community that wishes for works to be performed and discussed in later years. The problems that face electroacoustic music analysis are that there is no consensus or single analytical tool/methodology that dictates how such an activity should be undertaken. Rather than attempting to appropriate existing tools meant for traditional musics or create a new universal one this thesis will argue that a new culture should be adopted that promotes different opinions on the subject of electroacoustic music analysis, as opposed to defining a consensus as to how it should be conducted. To achieve this the thesis will: evaluate and critique what constitutes and defines electroacoustic music analysis; provide a general and flexible procedure to conduct an analysis of an electroacoustic work; develop a set of criteria and terms to cross-examine the current analytical tools for electroacoustic music in order to define the gaps in the field and to identify pertinent elements within electroacoustic works; analyse a number of electroacoustic works to test and implement the ideas raised within this thesis; and finally the concept of an analytical community (in which such a culture could exist) is outlined and implemented with the creation of the OREMA (Online Repository for Electroacoustic Music Analysis) project. This universal approach will cover both epistemological and ontological levels of electroacoustic music analysis. All of the concepts raised above are interlinked and follow the main hypothesis of this thesis: • There is no one single analysis that can fully investigate a work; • Analyses are a perspective on a work, ultimately formed through the subjective perception of the analyst; • These perspectives should be shared with other practitioners to help develop a better understanding of the art form. This PhD study was part of the New Multimedia Tools for Electroacoustic Music Analysis project (2010-2013) funded by the Arts and Humanities Research Council (UK). Other outcomes of that project included the various analysis symposiums held at De Montfort University in Leicester and the electroacoustic analysis software EAnalysis created by Pierre Couprie.

The domain of this thesis is electroacoustic computer-based music and sound art. It investigates a facet of composition which is often neglected or ill-defined: the process of composing itself and its embedding in time. Previous research mostly focused on instrumental composition or, when electronic music was included, the computer was treated as a tool which would eventually be subtracted from the equation. The aim was either to explain a resultant piece of music by reconstructing the intention of the composer, or to explain human creativity by building a model of the mind. Our aim instead is to understand composition as an irreducible unfolding of material traces which takes place in its own temporality. This understanding is formalised as a software framework that traces creation time as a version graph of transactions. The instantiation and manipulation of any musical structure implemented within this framework is thereby automatically stored in a database. Not only can it be queried ex post by an external researcher—providing a new quality for the empirical analysis of the activity of composing—but it is an integral part of the composition environment. Therefore it can recursively become a source for the ongoing composition and introduce new ways of aesthetic expression. The framework aims to unify creation and performance time, fixed and generative composition, human and algorithmic “writing”, a writing that includes indeterminate elements which condense as concurrent vertices in the version graph. The second major contribution is a critical epistemological discourse on the question of ob- servability and the function of observation. Our goal is to explore a new direction of artistic research which is characterised by a mixed methodology of theoretical writing, technological development and artistic practice. The form of the thesis is an exercise in becoming process-like itself, wherein the epistemic thing is generated by translating the gaps between these three levels. This is my idea of the new aesthetics: That through the operation of a re-entry one may establish a sort of process “form”, yielding works which go beyond a categorical either “sound-in-itself” or “conceptualism”. Exemplary processes are revealed by deconstructing a series of existing pieces, as well as through the successful application of the new framework in the creation of new pieces.

The listener’s experience as an embodied subject is at the centre of this work. Embodied experience forms the basis for analyses of three contemporary compositions that sample bodily sound, in order to question how such works represent and mediate the body. The possible applications of this embodied methodology are illustrated through three case studies: Crackers by Christof Migone (2001), A Chance to Cut is a Chance to Cure by Matmos (2001) and Ground Techniques (2009) by Neil Luck. The findings of each analysis are placed within discussion of critical and theoretical concerns related to the (re)presentation, mediation and manipulation of the body both as materiality and as social construct, using, in particular, work by Hansen (2004) and Wegenstein (2006). The sampling practices of these works lead to the fragmentation of the represented bodies, in which margins between bodily interiors and exteriors are frequently crossed, bringing about a reconfiguration of the musical subject. Furthermore, the celebration of the bodily origins of these works complicates notions of recorded sound as disembodied. The analytical methodology developed in this thesis derives from a consideration of approaches in a number of fields: feminist musicology, music psychology, embodied cognition, phenomenology, music and gesture and new media theory. The sensations and affective responses of the listening body are discussed alongside an examination of how listening is shaped by processes of technological mediation. This thesis attends to both the body that is listening and the body that is listened to. I argue that it is not adequate to understand the works studied as merely representing the body, but suggest it would be more appropriate to understand the relationship between work and body as multi-faceted, conceptualising the body and recorded sound as mutually framing. This uncovers not only technology as mediation, but also the body as mediation. Finally, the case studies are used to reflect upon the limits of the embodied analysis methodology and its potential for wider application.

In this thesis I argue that the relationship between the increasing ubiquity of digital audio technologies and the transformation of aesthetic hierarchies in electroacoustic and sound art traditions is not deterministic, but negotiated by producers and policy-makers in specific historical and cultural contexts. Interviews, observations, and historical data were gathered during sixteen months of ethnographic fieldwork in the Canadian city of Montreal between 2011 and 2012. Research was conducted and analysed in collaboration with a transnational group of researchers on a programme of comparative research that tracked global changes to music and musical practice associated with digital technologies. The introduction presents Montreal as a rich ecology in which to track struggles for aesthetic authority, detailing its history as a key site of electroacoustic and sound art production, and its local positioning as a politically strategic 'hub' for the Canadian culture industry. Core chapters examine the specific role of digital mediation in the negotiation of electroacoustic and sound art aesthetics from multiple interlocking perspectives: the recursive relationship between technological affordances and theories of mediation; the mobilisation of digital technologies in the delineation of cultural, professional and generational territories; the political contestation of digital literacies and pedagogies; the articulation of the digital's opposition with analogue in the construction of instruments and recording formats; and the effects of the digital on the dynamics of genre and genre hierarchies. The concluding chapter offers a critique of the notion that digital mediation has shifted the balance between the normative and the generative dimensions of genrefication in the scenes in question, and closes by suggesting how a better understanding of this shift at an empirical level can inform an ongoing rethinking of the interaction between technology and aesthetics among scholars, policy makers, and musicians.

Thanks to the development of new technology, musical instruments are no more tied to their existing acoustic or technical limitations as almost all parameters can be augmented or modified in real time. An increasing number of composers, performers, and computer programmers have thus become interested in different ways of "supersizing" acoustic instruments in order to open up previously-unheard instrumental sounds. This leads us to the question of what constitutes a super instrument and what challenges does it pose aesthetically and technically? This work explores the effects that super instruments have on the identity of a given solo instrument, on the identity of a composition and on the experience of performing this kind of repertoire. The super instrument comes to be defined as a bundle of more than one instrumental lines that achieve a coherent overall identity when generated in real time. On the basis of my own personal experience of performing the works discussed in this dissertation, super instruments vary a great deal but each has a transformative effect on the identity and performance practice of the pianist. This discussion approaches the topic from the viewpoint of contemporary keyboard music, showcasing examples of super instrument compositions of the 21st century. Thus, the main purposes of this practise based research project is to explore the essence and role of piano or toy piano in a super instrument constellation, as well as the performer's role as a "super instrumentalist". I consider these issues in relation to case studies drawn from my own compositional work and a selection of works composed by Karlheinz Essl and Jeff Brown.

The research contained within this PhD project forms part of the Pedagogical ElectroAcoustic Resource Site project of the Music, Technology and Innovation Research Centre of De Montfort University Leicester. This thesis contributes to current research in music education and musicology related to electroacoustic music. The purpose of this research was to investigate the influence of teaching on the change in inexperienced listeners’ appreciation of electroacoustic music. A curriculum was developed to introduce electroacoustic music to 11 to 14 year old students (Key Stage 3). The curriculum was based on concepts distinguishing between electroacoustic music using (mainly) real-world sounds and generated sounds. The curriculum is presented in an online learning environment with an accompanying teacher’s handbook. The learning environment represents the prototype for the pedagogical ElectroAcoustic Resource Site offering online learning, blended learning and classroom-based learning. The website was developed following user-centred design; the curriculum was tested in a large-scale study including four Key Stage 3 classes within three schools in Leicester. In five lessons music using real-world sounds (soundscape and musique concrète) was introduced, which included the delivery of a listening training, independent research and creative tasks (composition or devising a role-play). The teaching design followed the methods of active, collaborative and self-regulated learning. Data was collected by using questionnaires, direct responses to listening experiences before and after the teaching, and summaries of the teaching written by the participants. Following a Qualitative Content Analysis, the results of the study show that the participants’ appreciation of electroacoustic music changed during the course of these lessons. Learning success could be established as well as a declining alienation towards electroacoustic music. The principal conclusion is that the appreciation of electroacoustic music can be enhanced through the acquiring of conceptual knowledge, especially through the enhancing of listening skills following the structured listening training as well as the broadening of vocabulary to describe the listening experience.

Esta pesquisa tem o objetivo de realizar um mapeamento de questões presentes em um conjunto de obras que, a partir de meados da década de 1970, vêm se agrupando sob o termo - arte sonora. Para tanto, este trabalho parte de uma aproximação com o repertório, na medida em que realiza um levantamento e análise, por meio de bibliografia, discografia, catálogos de obras e outras fontes, abordando o trabalho de vários artistas que se destacam nesse âmbito, bem como apontando diversas questões extraídas desse primeiro passo. A partir daí, constatou-se que esse repertório é bastante amplo e divergente, e que a delimitação desse campo pode ser apenas aproximada. Porém, para a realização de um mapeamento do ideário da arte sonora, foi estabelecido um levantamento e análise de obras de artistas que, de uma forma ou outra, influenciaram esse processo. Três referências fundamentais são levantadas e abordadas: a Música Eletroacústica, a Installation Art e a Performance Art. Posteriormente a pesquisa concentrou-se no que, no decorrer da dissertação, chamamos de arte sonora e a partir daí, extraiu-se cinco aspectos considerados fundamentais para a análise e compreensão desse repertório. São eles: Sonoridade, Tecnologia, Interação, Espaço e Tempo. / The main purpose of this research is to map the central aspects that can be observed in a representative repertoire of art works that since the 70\' is been labeled Sound Art. This work starts from the research and analysis of this repertoire based on the available bibliography, audiography, exhibitions\' catalogues and other sources. A representative number of artists are investigated and their work analyzed. From this research it becomes evident that this repertoire is extremely large ample and divergent, and that the delimitation of this field is a difficult task. However, for the accomplishment of a mapping of the main concepts that area related to Sound Art, we proceeded the analysis of a number of works. Three basic references are investigated: Electroacoustic Music; Installation Art and Performance. Afterward the research investigated five aspects that we consider to be of fundamental importance to the comprehension of this repertoire: Sound, Technology, Interaction, Space and Time