Composition has been conceptualized as a method for communicating a way of thinking (i.e., cognition) from composers to performers and audience members. Music notation, or how music is represented in a visual format, becomes the vehicle through which such cognition is communicated. In the past, research on notation has been approached either categorically or as a taxonomy, where it is placed into separate categories based primarily on visual elements, including its symbols, conventions, and practices. The modern application of notation in Western classical music repertoire, however, has shown that the boundaries between these systems are not always clear and sometimes blend together. Viewing music notation from a spectrum-based approach instead provides a better understanding of notation through its cognitive effects. These spectra can then be viewed through multiple dimensions, all addressing different aspects. The first dimension consists of the historical systems of notation, ranging from standard music notation (SMN) to music graphics. Additional kinds of notation, such as proportional, pictorial, and aleatoric, work as the mediary levels between these two. The second dimension focuses on whether notation is processed intuitively, based on either cultural priming or general cognitive principles, or through conscious interpretation. The last dimension views notation as either …

This dissertation explores the use of topics for dramatic purposes in Mozart's Così fan tutte. The five analytical chapters are organized around a central question: how do pastoral and fanfare topics shape the plot of Così fan tutte? Chapter 2 highlights the role topics and tropes play in emplacing and nuancing emergent meaning in the Così fan tutte motto. Chapter 3 examines transformative topical tropes in "Ah guarda, sorella." Chapter 4 shows how the horn fifths and fanfare topics in "Per pietà, ben mio" frame Fiordiligi's choice: the Albanian or Guglielmo. Chapter 5 illustrates the relationship between fanfare topics and galant recitative schemas to articulate formal boundaries between accompanied recitatives and arias. The expectations of closure emplaced by the examples from Così fan tutte nuance a reading of "Hai già vinta la causa!" from Le nozze di Figaro. Chapter 6 discusses the role of recitative intrusions and their articulation of the Count's unrest in "Vedrò mentre io sospiro." Detailed analyses and close readings of the topics and tropes in this dissertation drawn from throughout Così fan tutte showcase Mozart's rich deployment of topics in varied musical and dramatic roles.