One of the greatest mysteries in the history of music is the castrato singers of the Baroque era. Castration has existed for many thousands of years, but for the first time in history, it was used for artistic purposes. Who were these men who seemingly gave up their masculinity for the sake of music? By examining the time period and circumstances in which these musicians lived, an answer may be found. Exploring the economic, social, and political structure of the 17th and 18th centuries may reveal the mindset behind such a strange yet accepted practice. The in-depth study of their lives and careers will help lift the veil of mystery that surrounds them. Was their physical sacrifice a blessing or a curse? Was it worth it?

"Harry Partch's Keyboard Innovation" is a computer-assisted demonstration that introduces the tuning system used primarily by the twentieth-century American composer, Harry Partch. The multimedia product was developed in Director 6.0, and it includes sound and video clips from CDs and videocassettes of Partch's works produced by Phillip Blackburn and distributed by the American Composers Forum. The content of the demonstration involves a 43-tone microtonal tuning system and its application in the music literature. This demonstration will discuss the chronological order in which these prototypes were developed and also includes samples of the tuning of notes in Partch's scale that the novice can experiment with interactively. These tones were synthesized using the Csound scores shown in Appendix B. Materials for this demonstration are based on Harry Partch's Genesis of a Music.

As a consequence to Gilbert and Sullivan's famed Carpet Quarrel, two operettas with decidedly "exotic" themes, The Nautch Girl; or, The Rajah of Chutneypore, and Utopia Limited; or, The Flowers of Progress were presented to London audiences. Neither has been accepted as part of the larger Savoy canon. This thesis considers the conspicuous business atmosphere of their originally performed contexts to understand why this situation arose. Critical social theory makes it possible to read the two documents as overt reflections on British imperialism. Examined more closely, however, the operettas reveal a great deal more about the highly introverted nature of exotic representation and the ambiguous dialogue between race and class hierarchies in late nineteenth-century British society.

The musical and spiritual life of Mary Lou Williams (1910 - 1981) came together in her later years in the writing of Mary Lou's Mass. Being both Roman Catholic and a jazz pianist and composer, it was inevitable that Williams would be the first jazz composer to write a setting of the mass. The degree of success resulting from the combination of jazz and the traditional forms of Western art music has always been controversial. Because of Williams's personal faith and aesthetics of music, however, she had little choice but to attempt the union of jazz and liturgical worship. After a biography of Williams, discussed in the context of her musical aesthetics, this thesis investigates the elements of conventional mass settings and oral tradition found in Mary Lou's Mass.