Diminished Triad Chords
Diminished Triad Chords
To construct a diminished triad from a scale
Start from the seventh note of a major scale. Now, in ascending order,
choose every other note in the scale until you have three notes. For example,
to construct a diminished chord from a C major scale we choose the seventh note from
the scale. In this case, a B note. Next we skip every other note in ascending order.
So we skip the C note and choose the D note. Then we skip the E note and choose the
F note. Since we have three notes we are finished. The notes of a B diminished chord
are B-D-F.
B Diminished Chord from C Major Scale

To construct diminished chords from the half-step formula
First choose a note as the root note. Next, count up three half-steps to get the
third of the chord. Now count up another three half-steps to get the fifth. For example,
to construct a G diminished chord count up three half-steps from G to Bb. Now count
up three half-steps from Bb to Db. Done. The notes of a G diminished chord are G-Bb-Db.
G diminished from half-step formula
