A triad is a three-note chord built by stacking thirds. In its basic form, it contains:
| Chord | Notes | Type |
|---|---|---|
| C Major | C - E - G | Major |
| D Minor | D - F - A | Minor |
| E Minor | E - G - B | Minor |
| F Major | F - A - C | Major |
| G Major | G - B - D | Major |
| A Minor | A - C - E | Minor |
| B Diminished | B - D - F | Diminished |