Information with mp3 files, an introduction to the 'diminished-major' and its applications.

A concise explanation of the Gregorian and Renaissance modes and their development in the Common Practice era.

Claims that atonality is unnatural while tonality is acoustically and historically natural.

Music theory lessons with accompanying MIDI files.

Analysis of full-music 20th Century atonal pieces.

Information about studying for and taking the advanced placement music theory exam. [PDF]

Interactive atonal set calculator for pitch class sets and twelve-tone rows. Enter one or two sets and find normal order, prime form, Forte number, interval vector, and symmetry.

Transposes all twelve major keys of chord progressions.

A contemporary alternative to atonal styles of composition.

Essays explaining computer music theory providing detailed analysis.

A concise summary of important concepts in music.

Visual representations of music expressed in terms of color. In English, Ukrainian and Russian.

Offers a musical dictionary, recorder lessons, instrument information and a composers listing.

Provides a type of spectrogram suitable for understanding the structure of music.

Java applets designed to help students of music improve their basic music reading skills.

A reference resource on music theory, covering in brief a vast array of topics.

Summarizes entry-level music theory through advanced topics. Includes beginners' drills.

Introduction to the essential concepts of Schenkerian analysis applied to the Ab Major fugue of Bach's Well-Tempered Clavier, Book I

Bibliography of fugue analysis research, writings and analysis.

Articles on advanced atonal and serial concepts.

Online ear training site.

A paper about the unification of Janecek's theory of imaginary tones with the two Risinger's principles of functional relations.

By Tom Sutcliffe. Aims to help students of music theory understand the role of chord progressions in musical structures. Site includes animated demos.

A free music theory tool designed to help musicians interpret chord progressions, easily transpose music to a different key, compose new music, and understand key signatures, scales, and modes.

This site drills ear-training (aural skills), focusing on the aural recognition of musical sounds, including intervals and chords.