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Thesis (Ph. D.)--Department of Music, Stanford University, 2008. / Includes bibliographical references (p. 137-147).

The extended Lydian Locrian theory of harmony (ELL) is a system of analyzing harmonies and progressions according to their position along a vast spectrum of colors. The musical premise is that chords and progressions spanning upwards around the circle of fifths sound brighter, whereas chords and progressions spanning downwards around the circle of fifths sound darker. This simple premise gives rise to a complex but unified system of harmonic structures and relations, a system which provides a valuable tool for analyzing and composing music, especially of advanced tonal genres. ELL not only provides fruitful techniques for analyzing certain kinds of traditional harmonies and progressions but also provides a framework for discovering more exotic and colorful harmonies and progressions.

The purpose of this experiment is therefore (1) to design a test to measure the skill of a heterogeneous group of college music students and (2) to administer and evaluate an aural training program which could be used to develop efficiently aural intelligence. The students used in this experiment were intentionally chosen with varying abilities in order to permit comparisons. A careful record was kept of their ages, musical experiences, major instruments (voice, piano, violin, and other orchestral instruments), amount of training, skill and technique, and theory grades.

The purpose of the proposed thesis is to:1. Define expert systems and discuss various implementation techniques for the components of expert systems. This includes discussion on knowledge representation, inference methods, methods for dealing with uncertainty, and methods of explanation. Specifically, the focus will be on the implementation of rule-based expert systems;2. Apply selected expert system techniques to a case study. The case study will be a rule-based expert system in Prolog to recognize and identify musical chords from tonal harmony. The system will have a general knowledge base containing fundamental rules about chord construction. It will also contain some knowledge that will allow it to deduce non-trivial chords. Furthermore, it will contain procedures to deal with uncertainty and explanation;3. Explain general concepts about music theory and tonal chord classification to put the case study in context; and4. Discuss the limitations of expert systems based on the results of the case study and the current literature. / Department of Computer Science

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Denna undersökning handlar om hur en reharmonisering påverkar unga vuxna musikers känslomässiga uppfattning av låten ”Tryggare kan ingen vara”. För att få reda på vilka känslor deltagarna kände fick de fylla i ett formulär som var baserat på Geneva Emotional Music Scale (förkortat som GEMS). Utöver detta formulär fick de även svara på två korta frågor samt fylla i ett formulär om sin musikaliska bakgrund. Studien visar att unga vuxna musiker känslomässigt reagerar annorlunda på olika harmoniseringar av ”Tryggare kan ingen vara”. De mest intressanta skillnaderna presenteras och analyseras med hjälp av uträknade median- och medelvärden utifrån formuläret som är baserat på GEMS. Dessa siffror jämförs sedan med de andra frågorna som deltagarna fick svara på och det förs resonemang kring varför de möjligen svarade som de svarade.

The purpose of this study was to investigate how a small selection of guitar teachers go about to teach chords on electric guitar, as well as how a small selection of guitar students have experienced the phenomena during their studies. To answer the research questions, two experienced guitar teacher and two guitar students were subjects to qualitative interviews. The theoretical perspective of the study was hermeneutic. The results showed that the methods employed by the teachers to a high degree related to how they have been taught and also learned by themselves. Another result is that the combination of systems, music theory and practical musical performance can help guitar students to reach a point of musical independence. The results provide an insight in how chordal playing on electric guitar can take place on a higher level, and also opens up for research within several areas of guitar education. / Syftet med denna studie var att undersöka hur ett mindre urval av gitarrlärare lär ut ackord på elgitarr, samt hur ett mindre urval gitarrelever upplevt att de undervisats i ackordspel. För att besvara forskningsfrågorna genomfördes kvalitativa intervjuer med två erfarna gitarrlärare, samt två gitarrelever som studerat elgitarr på musikgymnasium och folkhögskola. Studiens teoretiska perspektiv var hermeneutiskt. Resultaten visar att lärarna till stor del undervisar med metoder som fungerat för dem själva, samt att en kombination av system, musikteori och framförallt praktiskt musicerande kan ge gitarrelever de grundkunskaper som behövs för att vara självgående som elgitarrist. Resultat ger en inblick i hur ackordundervisning kan ta form på högre nivå, och öppnar upp för flera områden av framtida forskning i elgitarrmetodik.

Parsimonious voice leading is a term, first used by Richard Cohn, to describe non-diatonic motion among triads that will preserve as many common tones as possible, while limiting the distance traveled by the voice that does move to a tone or, better yet, a semitone. Some scholars have applied these principles to seventh chords, laying the groundwork for this study, which strives toward a reasonably comprehensive, usable model for musical analysis. Rather than emphasizing mathematical proofs, as a number of approaches have done, this study relies on two- and three-dimensional geometric visualizations and spatial analogies to describe pitch-class and harmonic relationships. These geometric realizations are based on the organization of the neo-Riemannian Tonnetz, but they expand and apply the organizational principles of the Tonnetz to seventh sonorities. It allows for the descriptive “mapping” or prescriptive “navigation” of harmonic paths through a defined space. The viability of the theoretical model is examined in analyses of passages from the repertoire of Frédéric Chopin. These passages exhibit a harmonic syntax that is often difficult to analyze as anything other than “tonally unstable” or “transitional.” This study seeks to analyze these passages in terms of what they are, rather than what they are not.