Cadd9 Chord
Chord Tones
| Interval | Note |
|---|---|
| Perfect 1st | C |
| Major 3rd | E |
| Perfect 5th | G |
| Major 9th | D |
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Tetrad (four-note chord) rooted on C（Chord Tones: C, E, G, D）
| Interval | Note |
|---|---|
| Perfect 1st | C |
| Major 3rd | E |
| Perfect 5th | G |
| Major 9th | D |
