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C Dominant 7th Chord (C7)

Notes: C, E, G, B♭. Tap any diagram to hear it.

C7
Notes
CEGB♭
Formula
1 – 3 – 5 – ♭7

C7 on guitar

Open position · most common
x-3-2-3-1-0
Fret 5
8-7-5-5-5-6
Fret 8
8-10-8-9-8-8

Strings from low (left) to high (right). Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. × = don’t play, ○ = open string.

C7 on ukulele

Open position · most common
0-0-0-1
Fret 5
5-7-6-7
Fret 8
9-10-8-10

C7 on piano

Other C chords

CCmCmaj7Cm7Csus2Csus4CdimCaugC6Cm6C9Cadd9C7sus4Cm7♭5Cdim7

Dominant 7th chords in other keys

C♯7D7E♭7E7F7F♯7G7A♭7A7B♭7B7

About the C Dominant 7th chord

Dominant seventh chords add tension that wants to resolve, usually to the chord a fifth below. They are essential in blues, jazz and rock. C7 is built from the root (C), major third (E), perfect fifth (G), minor seventh (B♭).

Frequently asked questions

What notes are in the C Dominant 7th chord?

The C7 chord is made of C, E, G, B♭: the root, major third, perfect fifth, minor seventh.

How do you play C7 on guitar?

The most common fingering is x-3-2-3-1-0, from the low E string to the high E string (x = don’t play that string, 0 = open string).

How do you play C7 on piano?

Press C, E, G, B♭ together. In root position the lowest note is C.