Chords
Cadd9
A plain major chord with a sparkle on top.
C E G D · 1 3 5 9
The add9 chord takes a plain major triad and adds just the 9th — no 7th — for a bright, ringing sparkle that pop and rock players love.
Every voicing on the neck
The idea
A major triad plus a 9th
Cadd9 is C E G D — a C major chord with the 9th (D) added, and no 7th. Unlike C9, it keeps the clean triad sound and just adds shimmer.
- Notes: R 3 5 9 = C E G D.
- It's a plain C with the 9 (D) added — no 7th.
- 'Add9' means add the 9 without the 7; that's the key difference from C9.
Where it lives
Pop, rock and acoustic strumming
Cadd9 is a favourite open-chord upgrade — the sparkle in countless acoustic pop and rock songs. It replaces a plain C for instant richness.
- Swap a plain C for Cadd9 to add shimmer.
- A staple of acoustic pop and rock progressions.
- Pairs beautifully with G, Em7 and Dsus4.
Add just the 9th — no 7th — and a plain major chord gains a bright, ringing sparkle without losing its simplicity.
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