Other
Dr. Brian Blood: Music Theory and History Online
An exhaustive resource with everything concerning music theory. From ear training to music history, this site covers it all.
Other
Online Music Theory Reference
This site is essentially an online music theory dictionary or encyclopedia.It teaches about intervals, chords and scales. Online sound clips really enhance site.
Rudiments of Wisdom
Rudiments of Wisdom: Music
Learn about musical elements with cartoons. These hand drawn cartoons offer the viewer a different way to read about music other than the traditional text and pictures.
Other
Tonalsoft: Encyclopedia of Microtonal Music Theory
Find an online encyclopedia specializing in microtonal music theory.