Cadd9 Piano
Learn the C Add 9 (Cadd9) chord on piano: notes (C, E, G, D), intervals, fingering, diagram, and an interactive audio tool.
Quick answer
Cadd9 contains C, E, G, D. A clear, spacious extension of a major chord.
Positions
Root position
C · E · G · D
Inversion 1
E · G · D · C
Inversion 2
G · D · C · E
Inversion 3
D · C · E · G
Notes
- CRoot
- EMajor 3rd
- GPerfect 5th
- DMajor 9th
Intervals
Root · Major 3rd · Perfect 5th · Major 9th
Frequently asked questions
What notes are in Cadd9?
C · E · G · D
Which scales contain every note in Cadd9?
C Major · C Major Pentatonic · C Mixolydian
The song key and surrounding chords determine which compatible choice fits in context.