Seventh Chords Construction | Half Diminished Seventh Chords (4 of 5)

Throughout this video series we have learned how the two components which construct a seventh chord are a triad and an interval of a seventh above its root note. A half diminished seventh chord is called so because only the triad component is diminished, while the interval of a seventh is minor.

Now, the notes of a diminished triad are very similar to the notes of a minor triad with the exception of a flattened fifth.

AminorTriad.png

For example, if the notes of an A minor triad are A, C, and E,

AdimTriad.png

then the notes of a diminished triad would be A, C, and E-flat.