This submission consists of three parts, found in two volumes. Volume 1 consists of a folio of eight original compositions, composed during the tenure of my PhD candidature at the University of Adelaide. These works cover a range of media, including symphony orchestra with soloist, large chamber ensemble, string quartet with soprano solo, guitar quintet, mixed choir and vocal trio. Volume 2 presents an exegesis that contains commentary on the genesis and analysis of the submitted works, together with an explanation of certain modal processes that have been explored and applied. Volume 2 also contains three minor compositions that were composed during my candidature, presented as an Appendix. These are analysed and referenced within the exegesis discussion. Two CDs of live recordings of some of the submitted works are included as part of Volume 2. The Exegesis, Appendix and Sound Recordings found in Volume 2 act as secondary material to support the primary material presented in Volume 1. Of the eight compositions presented in Volume 1, Skin, Metal, Wood – Concerto for Percussion and Orchestra is the major orchestral work of over 30 minutes, in fulfilment of submission requirements. The musical works contained within this submission offer a personal exploration of certain modal processes. In particular, the tonal principles of modulation and key relationships have been transferred into a modal system that features church, folk and synthetic modes. The exploration of modal processes has been carried out through the works themselves, and the accompanying exegesis acts as a commentary on the genesis of the works. / Thesis (Ph.D.) - University of Adelaide, Elder Conservatorium of Music, 2008

Season Songs is a song cycle for mezzo-soprano (or tenor) and medium sized orchestra (a perfoming version for voice and piano is appended). There are four songs and an orchestral prelude. The poems are by various authors and provide the programmatic elements of the cycle in that each poem is set in a different season of the year and time of day: winter/morning, spring/afternoon, summer/evening, and autumn/night respectively. The title of the prelude sets it just before dawn. The music of the prelude and the last song is closely related both motivically and tonally, thus reinforcing the cyclical nature of the work. The accompanying commentary seeks to explain the compositional processes and aesthetic principles which guided the creation of Season Songs. The music explores nonfunctional tonality, in that means other than traditional tonic-dominant (i.e., V-I) relationships are sought by which to create a sense of forward propelled harmonic motion. This sense of harmonic "trajectory", in conjunction with appropriate rhythmic proportions, is held to be one of the most important factors contributing toward the sense of departure and return, tension and resolution in the music. The main means used toward this end is a four-note source cell which governs much of the harmonic and motivic activity in the work, from the most local level of leading motives of individual songs to the broadest level of key relationships among songs. The harmonic manifestation of the source cell promotes root movement by major thirds and minor seconds on the local as well as broad levels. Sonorities associated with traditional tonality, such as open fifths in the bass and major or minor triads, are common, although the contexts in which they are heard are usually non-traditional. The metric pulse is usually distinctly articulated and readily intelligible, although changes in metre are frequent in most of the songs. The text setting aspires to a directness of expression. The words will be intelligible in performance and the music reflects and magnifies the emotional content of the the text. While there are several levels on which the music can be appreciated, over-obscurity is avoided, as a rule, especially in the composition of the musical surface. / Arts, Faculty of / Music, School of / Graduate