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C♯11 Chord: Guitar, Piano and Notes

The C♯11 chord is a dominant eleventh chord built on the root note C♯. Its notes are C♯, G♯, B, D♯ and F♯. It's enharmonically the same chord as D♭11.

Transpose
Quality
Short answer

Dominant eleventh chords sound wide and suspended. The eleventh sits a half step above the major third that would normally anchor the chord, a clash sharp enough that the third is left out entirely and the fifth, seventh, ninth and eleventh do the talking.

Notes
C♯ · G♯ · B · D♯ · F♯
Formula
1 · 5 · ♭7 · 9 · 11
Semitones
0 · 7 · 10 · 14 · 17
Note
C♯
Quality
Dominant 11
Symbol
C♯11

C♯11 on piano

5 notes
View:
Piano diagram of the C♯11 chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

To play C♯11 on piano, place your right hand with your thumb on C♯, index finger on G♯, middle finger on B, ring finger on D♯ and little finger on F♯. Press the keys together and listen for an even sound. On the keyboard C♯, G♯, D♯ and F♯ are black keys and B is white. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard. Practice moving in and out of the chord slowly, then bring in a metronome.

  • C♯1
  • G♯5
  • B♭7
  • D♯9
  • F♯11

C♯11 on guitar

View:
Guitar chord diagram of the C♯11 chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

On guitar, C♯11 is commonly played with the voicing shown above. This one is a barre at fret 1: keep the index finger flat across the strings and curve the others so they don't mute the strings next to them. String 2 rings open. Don't play string 6.

C♯ · G♯ · B · D♯ · F♯

Try C♯11 on the virtual piano

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C♯11 chord notes

Also known as D♭11

DegreeIntervalSemitonesNoteHear
1Root0C♯(C#)
5Perfect fifth7G♯(G#)
♭7Minor seventh10B
9Major ninth14D♯(D#)
11Perfect eleventh17F♯(F#)

How to use the C♯11 chord

The C♯11 chord is built from a root, a perfect fifth, a minor seventh, a major ninth and a perfect eleventh. Start at the root C♯ and stack the intervals to get the whole chord: C♯, G♯, B, D♯ and F♯. The same formula gives you the chord in any other key.

Dominant eleventh chords show up in modal jazz and gospel as a suspended, unresolved colour, often standing in for a sus4 with extra shimmer on top. They work best in slow-moving vamps rather than fast cadences.

How C♯11 differs from similar chords

C♯11 stacks a ninth and an eleventh on C♯7, and the eleventh is the same note as the fourth. Because that fourth clashes with the major third, the third is left out, so the chord sounds close to C♯7sus4 with a ninth. It differs from C♯13, which keeps the third and adds the sixth an octave up.

Where C♯11 is used

A dominant chord wants to resolve. Its home is the V of a major key - and the I of a blues, where the pull never lets up.

As the VF♯ major
  1. ii7G♯m7
  2. V11C♯11
  3. Imaj7F♯maj7

C♯11 is the chord that wants to resolve, so ending the loop on it hands straight back to the top.

Questions people ask

What notes are in the C♯11 chord?
The C♯11 chord contains C♯, G♯, B, D♯ and F♯ (C#, G#, B, D# and F# in plain text).
Is the C♯11 chord major or minor?
C♯11 is a dominant eleventh chord. Dominant eleventh chords sound wide and suspended. The eleventh sits a half step above the major third that would normally anchor the chord, a clash sharp enough that the third is left out entirely and the fifth, seventh, ninth and eleventh do the talking.
How do you play C♯11 on piano?
Place your fingers on C♯, G♯, B, D♯ and F♯ and play them together. The root usually goes to the little finger of the left hand, the upper notes to the right. On the keyboard C♯, G♯, D♯ and F♯ are black keys and B is white. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard.
How do you play C♯11 on guitar?
Use the fingering in the diagram above. This one is a barre at fret 1: keep the index finger flat across the strings and curve the others so they don't mute the strings next to them. String 2 rings open. Don't play string 6.
What is another name for the C♯11 chord?
C♯11 is enharmonically equivalent to D♭11. Both chord names describe exactly the same notes, but the spelling depends on the key you are playing in.