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C6 Chord: Guitar, Piano and Notes

The C6 chord is a major sixth chord built on the root note C. Its notes are C, E, G and A.

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Short answer

Major sixth chords sound bright and settled without the pull of a seventh. Adding a major sixth to a major triad gives a warm, slightly retro colour that filled swing bands and fifties pop, and it still ends a song beautifully.

Notes
C · E · G · A
Formula
1 · 3 · 5 · 6
Semitones
0 · 4 · 7 · 9
Note
C
Quality
Major 6
Symbol
C6

C6 on piano

4 notes
View:
Piano diagram of the C6 chord

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

To play C6 on piano, place your right hand with your thumb on C, index finger on E, middle finger on G and little finger on A. Press the keys together and listen for an even sound. On the keyboard every note of C6 is a white key. Practice moving in and out of the chord slowly, then bring in a metronome.

  • C1
  • E3
  • G5
  • A6

C6 on guitar

View:
Guitar chord diagram of the C6 chord

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

On guitar, C6 is commonly played with the voicing shown above. The fretted notes sit between frets 1 and 3. Don't play string 6.

C · E · G · A

Play C6 on the online piano

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C6 chord notes

DegreeIntervalSemitonesNoteHear
1Root0C
3Major third4E
5Perfect fifth7G
6Major sixth9A

How to use the C6 chord

The C6 chord is built from a root, a major third, a perfect fifth and a major sixth. Start at the root C and stack the intervals to get the whole chord: C, E, G and A. The same formula gives you the chord in any other key.

Major sixth chords work as a softer substitute for a major triad, especially as a final chord where a maj7 would sound too jazzy. Swing, rockabilly, bossa nova and country all lean on them.

How C6 differs from similar chords

C6 and Cmaj7 both add one note to C, but the sixth sits a whole step below the major seventh and makes no dissonance with the root. C6 has exactly the same notes as the minor seventh chord a minor third below it, so the bass note decides which of the two you hear.

Where C6 is used

A major chord is at home as a tonic, and just as useful as the IV or the V of a neighbouring key. Each progression below is written in the key its numerals name.

As the tonic (I)C major
  1. I6C6
  2. vi7Am7
  3. ii7Dm7
  4. V7G7

Home. The loop leaves C6 and keeps coming back to it.

As the goal of a ii-V-IC major
  1. ii7Dm7
  2. V7G7
  3. I6C6

The oldest cadence there is: two chords of preparation, then C6.

Questions people ask

What notes are in the C6 chord?
The C6 chord contains C, E, G and A.
Is the C6 chord major or minor?
C6 is a major sixth chord. Major sixth chords sound bright and settled without the pull of a seventh. Adding a major sixth to a major triad gives a warm, slightly retro colour that filled swing bands and fifties pop, and it still ends a song beautifully.
How do you play C6 on piano?
Place your fingers on C, E, G and A 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 every note of C6 is a white key.
How do you play C6 on guitar?
Use the fingering in the diagram above. The fretted notes sit between frets 1 and 3. Don't play string 6.
What chords work well with C6?
C6 pairs naturally with the chords in the related section: a perfect fifth up or down, the relative major or minor, and anything sharing two notes with it.