C♯9
9 · C♯ – E♯ – G♯ – B – D♯
- C♯R
- E♯3
- G♯5
- B♭7
- D♯9
hear it, browse voicings, or tap notes to name any chord
Guitar voicings
Piano
- Root
- Third / sus
- Fifth
- Sixth / seventh
- Extension
About the C♯9 chord
The C♯9 chord (9) is made up of 5 notes — C♯ is the root, E♯ the major third, G♯ the perfect fifth, B the minor seventh and D♯ the ninth. It extends a dominant seventh chord with a ninth stacked above the seventh.
On guitar, C♯9 chords are most often played in open position: x41101. Let the open B string ring, and leave the low E string out. The diagrams above show 4 playable voicings in all.
Ninth chords extend the dominant seventh into a rich, funky sound at home in funk and jazz.
Common questions
- What notes are in the C♯9 chord?
- The C♯9 chord contains the notes C♯, E♯, G♯, B and D♯.
- How do you play C♯9 on guitar?
- A common open-position shape is x41101. The diagrams above show 4 playable voicings you can strum or hear.
- What intervals make up the C♯9 chord?
- The C♯9 chord is built from the root (C♯), a major third (E♯), a perfect fifth (G♯), a minor seventh (B) and a ninth (D♯).
- Is C♯9 the same as D♭9?
- Yes — C♯ and D♭ are two names for the same pitch (enharmonic equivalents), so C♯9 and D♭9 are the same chord. MobileChords spells it C♯9.
More than a chord chart
The chart above is just the start. Open C♯9 in the finder to hear it on guitar and piano and browse every playable voicing side by side. Or switch to Name my chord — tap frets or keys and MobileChords identifies the chord you're playing, inversions and slash chords included.