C#9 chord
C-sharp dominant ninth, also written Db9. One shape on the neck below, with the notes it's built from and the keys it belongs to.
Notes
- C#
- 1
- E#
- 3
- G#
- 5
- B
- b7
- D#
- 9
The major third is what makes it sound bright and settled.
The minor seventh adds a bluesy edge and leaves the chord sounding unfinished.
The 9th adds color on top without changing whether it's major or minor.
How to play C#9
- Root on A
- x43444
Want to know why this chord works where it does? The Intermediate lessons cover it, and founding players get them first.
Keys with C#9
C#9 uses only notes from F# major and Eb minor. It sounds most at home in F# major.