Guitar Music Theory

Deriving chords from the major scale

Chords are built from a scale. This process is called harmonization, and consists of creating chords by stacking scale tones distanced by intervals of third.

If we add 2 intervals of third to a scale note, we obtain chords with 3 notes that could be major, minor, diminished or augmented chords . If we add 3 intervals, we obtain chords composed by 4 notes, and we call them seventh chords.

Chords from major scale

The harmonization of the major scale creates the following chords:

  • I the root note, is a major chord
  • II is minor chord
  • III is minor chord
  • IV major chord
  • V major chord
  • VI is a minor chord
  • VII is a diminished chord

Fachords Scales Harmonizer is an interactive guitar music theory application that shows you the harmonization of the major scale and the relative minor scales. It visualizes the various kind of seventh chords generated by the harmonization of a major, harmonic minor, melodic minor and natural minor scales, their structure and the tones composing the chords. The tones of the chords are visualized also on the guitar fretboard.

Chords chart reference in all keys

Here's a music keys and chords chart reference created with Fachords Scales Harmonizer. The first group is composed by the music keys with sharps notes, it starts from the C key and follows the circle of fifth:

C music key

music theory: guitar c major scale harmony

G music key

guitar theory: g major scale harmony

D music key

music theory: guitar d major scale harmony

A music key

music theory: guitar a major scale harmony

E music key

guitar theory: e major scale harmony

B music key

music theory: guitar b major scale harmony

F# music key

music theory: guitar f sharp major scale harmony

C# music key

music theory: guitar c sharp major scale harmony

The second group of music keys and chord chart composed by the music key with flats notes, starting from C key and ordered by the circle of fourh:

C music key

music theory: guitar c major scale harmony

Bb music key

music theory: guitar b flat major scale harmony

Eb music key

guitar theory: e flat major scale harmony

Ab music key

music theory: guitar a flat major scale harmony

Db music key

guitar theory: d flat major scale harmony

Gb music key

music theory: guitar g flat major scale harmony

Cb music key

guitar theory: c flat major scale harmony

You can learn the harmonization of harmonic minor scales, natural minor scales and melodic minor scales in an interactive way through Fachords Scales Harmonizer.

Is this helpful?

Share with your fellow guitar players

Stay updated and get free ebooks

download area Subscribe to the free newsletter and download chords and scales ebooks: click here to stay updated

Any questions or thoughts? Post a comment below!