General Music Theory
Enharmonic Key Signatures
Learn why some notes and scales go by two (or more) names by Brandy Kraemer, About.Com's Piano guide.
Rare & Theoretical Musical Keys
Rare and theoretical musical keys, from the redundantly complex, to the musically absurd, by Brandy Kraemer (About.Com's Piano guide).
Definition of Music Theory
Let's start off with the meaning of music theory and its'necessary elements.
MIBAC Software
Music theory lessons that begin with learning about pitch and the musical alphabet.
Basic Music Theory
An index of lessons in music theory.
DataDragon
Learn how to read music from these free tutorials.
Fun Music Company
Offers music theory worksheets for young children, older students and music teachers. You have to join their mailing list to fully access and download the worksheets.
Fun With Felt - Music Learning Felt Board Set
Has a fun and creative way of teaching kids about music concepts. The grandstaff and other music related materials are made of felt and comes with a cd to further enhance the fun and learning.
Introduction to Music Theory
For adults and kids who have no musical background. It starts with lessons on pitch and intervals and ends on triads and chord lessons. All lessons are free.
Olav Torvund's Guitar Pages - Music Theory
Music theory lessons specifically meant for guitar players. Lessons are free and begins with an introduction to scales and takes you all the way to 7th chords. Has illustrations to easily understand the lessons.
Keyboard and Music Theory
Music theory lessons for those interested in keyboards. All lessons are free and may be downloaded in PDF file. Lessons start with an introduction to the keyboard and takes you all the way to learning intervals.
Music Theory and History Online
Offers 34 free chapters on music theory. It starts from teaching you about the staffs and clefs and goes all the way to lessons on drums and drumming. It even has free chapters on music hustory and some drills to test your newly learned skills.
Ricci Adams' Music Theory Net
Great website that offers free music theory lessons that are all fully interactive.
Music Notes
The basics of music theory starting from note reading.Has many links to other music related resources.
Easy Music Theory by Gary Ewer
Great site which offers 26 free lessons starting from the musical staff. It has an instruction sheet, quiz and answer sheet. The rest of the lessons are available on CD-Rom.
Music Theory Web
Free tutorials starting from reading music. Also has some exercises. You need Macromedia Flash 7.0 to view the lessons.
Basics of Reading Music
Free tutorial on clefs and notes. Includes audio samples.
Music Tools for People
Learn how to play chords, play around with chord progressions and improve your songwriting. This program runs on Windows; free trial is available.