| The Anatomy of a Fugue | | An outline of the substantials of a fugue based on Hugo Norden's "Foundation Studies in Fugue." Topics include counterpoint, subject, answer, and stretto. |
| The Tonal Centre - Tonality | | Interactive site for music composers and theorists which explains and demonstrates some of the key concepts of tonality; including chords, scales, cadences, and modulation. |
| Timing Progression Theory | | Improvisational and atonal music played along four-beat base with constant tempo presented by Aratori. Includes MP3 sound. |
| Zeuxilogy | | A new theory of musical time, developed in the past twelve years by the music theorist Andrei Pogorilowski. |
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