3.3 · Building Chords

Major vs. minor

A major and minor triad differ by just one note: the third. Lower the third by one semitone, and a major chord becomes minor.

One note, two moods

To turn C major into C minor, lower the third by one semitone: E down to E♭. The root and fifth remain the same.

43CEG7bright34CE♭G7dark

Zoom in on the third

Hear the move by itself first, E dropping to E♭, then hear the same move inside the chord.

E · major third E · minor third

Game · Major or minor?

1 / 5

A mystery chord. Is it major (bright) or minor (dark)?

Listen first. Then answer.

Game · Build the chord

1 / 5

Now build them yourself. Count up from the root in semitones, every key, black ones included.

Major43rootthirdfifth7
Minor34rootthirdfifth7

Build C major. Tap the root: C.

Quiz

1 / 3

Major and minor triads differ by…

Score 100% on every quiz and game to complete this lesson. A perfect run sticks: a later miss never undoes it.Diminished & augmented