Rhythmic light by Fred Collopy
The most full and honorable source of knowledge about light to sound correspondences. Started in 1998 and still growing!
Encyclopedia of Microtonal Music Theory
A very deep resource about all the subtleties and complexities of music theory by [Joe Monzo](http://www.tonalsoft.com/enc/m/monzo-writings.aspx)
A free digital book that teaches a practical introduction to the new foundations of graphic design.
By Rune Madsen
Musical instrument museums online
Explore the world collections of musical instruments
Music animation machine
A life long project of Stephen Malinowski – he manually animates music pieces into nice visual playalongs. He uses blue color for the tonic (C) and accending colors for every next step of a fifth.
Home page of William A. Sethares
A very important figure in sensory dissonance research. His book "Tuning, Timbre, Spectrum, Scale" gives a comprehensive understanding of many important music concepts in a scientifically based way.
Acoustics and Vibration Animations by Dr. Daniel A. Russell
Teaching Professor of Acoustics, Graduate Program in Acoustics, The Pennsylvania State University. He created animations illustrating acoustics and vibration, waves and oscillation concepts.
Physics and music have been related for millenia. The art and science of music acoustics are presented here, in musician-friendly format, as is our research in music science.
Online color converter for different color models
List of pitch intervals
Comprehesive Wikipedia collection of intervals
List of chords
Comprehesive Wikipedia collection of chords
List of chord progressions
Comprehesive Wikipedia collection of chord progressions
List of scales and modes
Comprehesive Wikipedia collection of pitch class collections
The Music notation project
Many people struggle to learn to read and play music, and many give up before they become proficient. Could a better notation system make reading, writing, and playing music more enjoyable and easier to learn? We think so.
The Exciting Universe Of Music Theory
A complete study of all Scales in the existence by Ian Ring. "The place for all you music theory nerds to geek out. Bask in the warm bath of wisdom, and be envied by all your peers with your deep knowledge of musical lore. "
Based on the Western system of notes (as exemplified by the piano keyboard), there are 1490 possible scales. 2 In other words, with the combined genius of medieval monks through Beethoven through Stravinsky and Coltrane, we've managed to explore roughly 1% of this musical terrain.