guitar harmony chart

guitar harmony - link
guitar harmony - link

pdf file: Harmony_Chart

Example: C scale: C-D-E-F-G-A-B-C
                so harmony would be in the chords : C(M)-D(m)-E(m)-F(M)-G(M)-A(m)-B(o)-C(M)
                1,4,5 = Major / 2,3,6 = minor / 7 = diminished
Instead of "diminished" one, go semitone down and play the major chord. (like B-b(M) instead of B(o))


Chords
Major (M)    
root + Major Third(4th semitone after root) + perfect Fifth (7th semitone after root)

minor (m)    
root + minor Third(3rd semitone after root) + perfect Fifth (7th semitone after root)

diminished (o)    
root + minor Third(3rd semitone after root) + flattened Fifth (7th semitone after root)
(so it is basically minor with perfect fifth is replaced by flattened fifth)

note:
While technically out of key, in practice this is a common substitution for the diminished chord in a major key: go down a half-step from the diminished chord and play a major chord in its place. This is a ‘borrowed’ chord from the minor scale or Mixolydian mode starting on the same key note and is a very common substitution in rock and pop styles.


 Major scale W-W-H-W-W-W-H
 minor scale  W-H-W-W-H-W-W