» Atonal Set Calculator
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.
» Fugue No. 17: A-Flat Major
Introduction to the essential concepts of Schenkerian analysis applied to the Ab Major fugue of Bach's Well-Tempered Clavier, Book I
» Harmony.org.uk
By Tom Sutcliffe. Aims to help students of music theory understand the role of chord progressions in musical structures. Site includes animated demos.
» Interactive Circle of Fifths
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.
» Interval and Chord Ear-Training
This site drills ear-training (aural skills), focusing on the aural recognition of musical sounds, including intervals and chords.
» Music Theory
A guide to music theory that including chords, scales, music notation and other music theory topics. Has weblog format; includes links as well.
» Music Theory Instruction
Online instruction for all musicians beginner or advanced. Covers scales, chordal theory, progression theory, modes and foreign scales.
» Music Theory Society of New York State
Provides a forum for the exchange of information and to promote music theory as a scholarly and pedagogical discipline. Site also contains membership and scholarship information as well as open calls for papers.
» Musica Theoria
Offers explanation of chords, scales, harmony, tuning systems, counterpoint. Also provides links to ear training sites, news groups and history.
» Pattern Thinking in Music
Offers visual aid to recognizing musical patterns occurring in melody, harmony and rhythm. Provides online demonstration; requires download.
» SchenkerGuide
An introduction to Schenkerian analysis for undergraduate music students. Includes background, working method, glossary and bibliography.
» Skytopia: Music and Art Aesthetics
Author's overview of how every piece of music, every sound, and every picture can be rated on its own merits outside (as well as inside) human opinion.
» Technical Committee on Musical Acoustics
A group within the Acoustical Society of America, that concerns itself with the application of science and technology to the field of music. Contains members, a list of papers, acousticians and links.
» The Musical Octave
Thomas Váczy Hightower's study of musical scales. Discuses the meta-physical properties of music and the creation of musical scales from an acoustic and mathematical perspective.
» The Tonal Centre
Interactive site for music composers and theorists which explains and demonstrates some of the key concepts of tonality; including chords, scales, cadences, and modulation.
