A triad is a chord that consists of 3 different notes.
1. Major triad
Construction: root (1), major third (3), fifth (5)
Structure Major Triad:
| 5 | |
| minor third | |
| 3 | |
| major third | |
| 1 |
Notation: for ex. C
2. Minor triad
Construction: root (1), minor third (b3), fifth (5)
Structure Minor Triad:
| 5 | |
| major third | |
| b3 | |
| minor third | |
| 1 |
Notation: for ex. Cmin, Cm, Cmi
3. Diminished triad
Construction: root (1), minor third (b3), diminished fifth (b5)
Structure Diminished triad:
| b5 | |
| minor third | |
| b3 | |
| minor third | |
| 1 |
Notation: for ex. Cdim, C°
4. Augmented triad
Construction: root (1), major third (3), augmented fifth (#5)
Structure Augmented Triad:
| #5 | |
| major third | |
| 3 | |
| major third | |
| 1 |
Structure Suspended Triad:
| 5 | |
| major second | |
| 4 | |
| fourth | |
| 1 |