Music Theory

General Western Music Theory

• General Music 101: contains basics on Renaissance, Baroque, Classical, Romantic & 20th Century theory.
• MiBAC Music Theory Reference
• Music Theory for Guitar by Dimitris Dranidis
• AP Music Theory Course, with reference to the AP Music Theory Exam
• The Importance of Music Theory by Future Assassin
• A computer scientist's Music Theory Tutorial
• Phrase Structure Analysis: a glossary of terms by Brian Davidson
• Indiana University's Thesaurus Musicarum Latinarum (Gopher site)
• National Early Music Association (UK)
• The Gregorian Chant Home Page has more than just good music theory

Contemporary Music Theory

Various just-intonation articles by David Canright:

• Superparticular Pentatonics
• Fibonacci Gamelan Rhythms
• Harmonic-Melodic Diagrams
• A Tour Up The Harmonic Series
• A Justly-Tuned Guitar
• On Piano Retuning
• Pentatonics I Have Known
• Rational Notation
• The Contemporary Music Info-Junction -- Contemporary Composition and Theory