Music Theory
Music theory.net: Introduction to Chords
A thorough description of chords, roots, and triads. Provides illustrated examples as well as audio clips to supplement this lesson.(You may need to download Flash Player to view this site.)
Music Theory
Music theory.net: Generic Intervals
A thorough description of generic intervals with a printable chart at the end of the lesson. MusicTheory.net provides illustrated examples, and highlighted vocabulary terms. (You may need to download Flash Player to view this site.)
Music Theory
Music theory.net: Diatonic Triads
Descriptions of diatonic triads: major, natural minor, and harmonic minor. Provides animated illustrations, and a printable chart at the end of the lesson.
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
Tone Savvy
You will find many free games that will help you develop your music theory knowledge. Learn rhythmic dictation, key signatures and intervals as well as several other topics concerning music theory.
Wikimedia
Wikipedia: Music Theory
Wikipedia offers detailed information on music theory, a set of systems for analyzing, classifying, and composing music and the elements of music.
Other
The Essential Guitar Guide
A great resource for guitar players, this site provides a lot of music theory, how to play chords, how to improvise and more. On the download page there is a chord calculator that displays the notes of many chords.
Other
Analysis of Bach's G Minor Fugue (Bwv 861)
This site is an analysis of Bach's G minor fugue. Also available in Spanish.
Other
The Tonal Center/diatonic Scales
A comprehensive summary of basic music theory. Commentary is thorough yet practical. Information on tonality, chords, scales, cadences, etc. This pages is on diatonic scales.
Other
The Tonal Centre: Tonality
Study the aspects of music tonality with this site. Chords, scales and cadences are all explained as they relate to tonality.
Other
Vic Firth: Educator's Resource Library
This website is a cornucopia of resources for percussion instruction. There are videos, audiocasts, podcasts, interviews with talented percussionists. Please check out this website is you are interested in any aspect of percussion.
Other
Analysis of the C Major Invention (Bwv 772) by Bach
This site is an analysis of this well known Bach invention. Online sound clips enhance the diagrams and text. The site is also available in Spanish.
Other
Harmonic Analysis of Debussy's Prelude La Fille Aux Cheveux De Lin (Book I,viii)
A fine analysis of this Debussy prelude. Diagrams and text are easy to understand. The online sound clips are a plus! Site also available in Spanish.
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.
Music Theory
Music theory.net
This interactive resource provides hands-on lessons in basic music theory and ear training.
Other
The Basics of Reading Music
This site is an overview of how to read music. The basics of notation such as note and rest values, the names of lines and spaces of both treble and bass clefs, etc. are covered. Includes downloadable audio files.
Other
Saxlessons
The complete saxophone resource. Students are guided through lessons. Also, a wealth of information about the saxophone.
Lesson Tutor
Lesson Tutor: Music and Music History
A nice resource covering many basic music theory topics. Several of the topics include printable handouts.
Toby Rush
Music Theory: Imperfect Intervals [Pdf]
A music theory worksheet regarding imperfect intervals.
Toby Rush
Music Theory: Perfect Intervals [Pdf]
A music theory worksheet regarding perfect intervals.
Toby Rush
Music Theory: Diatonic Intervals [Pdf]
A music theory worksheet regarding diatonic intervals and their relationship to pitch.
Toby Rush
Music Theory: Circle of Fifths [Pdf]
A music theory worksheet regarding the circle of fifths.
Toby Rush
Music Theory: Key Signatures [Pdf]
A music theory worksheet regarding key signatures. Requires Adobe Reader [PDF].
Toby Rush
Music Theory: The Major Scales [Pdf]
A music theory worksheet regarding the major scales. Requires Adobe Reader [PDF].