C sharp add nine piano chord (C#add9)
Also written Dbadd9 (D flat add nine)
An add9 chord adds the ninth (the second, an octave up) to a major chord, without the seventh. It enriches the sound while staying bright: popular in pop and folk.
On the keyboard
Root position
- Notes
- C♯ – E♯ – G♯ – D♯
- Fingering (right hand)
- 1 – 2 – 3 – 5
Chord notes
| Note | Interval |
|---|---|
| C♯ (C sharp) | root |
| E♯ (E sharp) | major third |
| G♯ (G sharp) | perfect fifth |
| D♯ (D sharp) | major ninth |
Formula: 1 – 3 – 5 – 9 · C♯ – E♯ – G♯ – D♯
A progression with this chord
The chord replaces the first degree of a pop progression to enrich it.