Which notes are in the C#7sus4 chord?

C#7sus4 contains the notes C#, F#, G# and B. Relative to the root these are the degrees 1 – 4 – 5 – ♭7.

Are C#7sus4 and Db7sus4 the same chord?

Yes. C#7sus4 and Db7sus4 are enharmonically identical — the spelling differs but the frets and keys are the same. Which name is used depends on the key of the piece.

C# dominant 7th suspended 4th · Piano

C#7sus4 Chord on Piano

The C#7sus4 chord (C# dominant 7th suspended 4th) is built from the notes C#, F#, G# and B. The keyboard diagram below shows exactly which keys to press. The same chord is also written Db7sus4; both spellings sound identical.

Chord diagrams

C#7sus4

Notes in this chord

C♯
F♯
G♯
B

Degrees: 1 – 4 – 5 – ♭7

Also written: Db7sus4

How to play

To play C#7sus4 on piano, press C#, F#, G# and B together. In root position the lowest note is C#, and the finger numbers follow the keys left to right in the diagram.

Theory behind the chord

The 7sus4 chord combines the suspended fourth with a minor seventh. It delays resolution while keeping the dominant pull, which makes it a favourite setup chord before a V–I move. On C#7sus4 this structure sits on the root C#, so the degrees 1 – 4 – 5 – ♭7 map onto C#, F#, G# and B.

Frequently asked questions

Which notes are in the C#7sus4 chord?: C#7sus4 contains the notes C#, F#, G# and B. Relative to the root these are the degrees 1 – 4 – 5 – ♭7.
Are C#7sus4 and Db7sus4 the same chord?: Yes. C#7sus4 and Db7sus4 are enharmonically identical — the spelling differs but the frets and keys are the same. Which name is used depends on the key of the piece.

Practise C#7sus4 on your phone

Minory bundles the full chord library with a tuner, metronome and repertoire notebook — and it all works offline.