What notes are in a C7 chord?

C7 is C, E, G, Bb: the 1, 3, 5, ♭7 of C.

Guitar chord · Dominant 7th

C7 chord (C Dominant 7th)

Tense 7th chord driving blues and rock progressions toward resolution.

Notes CEGBb

Formula 1 3 5 ♭7

Shapes 3 on this page

C7 chord shapes

Tap a diagram to strum it. Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. Blue dots are the root, C.

E7-Shape (6th String Root) 8 10 8 9 8 8

A7-Shape (5th String Root) x 3 5 3 5 3

Open / C7 Shape x 3 2 3 1 0

Interactive chord diagram

C7 on the fretboard

STR OP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 E A D G B E ✕ ✕

Tap any note to hear it.

Scales to play over C7

These scales start on C and contain every note of the chord, so they fit when C7 is the chord of the moment.

C Mixolydian C Phrygian Dominant C Lydian Dominant C Half-Whole Diminished C Bebop Dominant C Mixolydian b6 C Bebop Dorian C Phrygian b4 C Mixolydian b2 C Lydian #2 #6 C Lydian Dominant b6 C Hungarian Major C Tritone

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Practise C7 and every other chord anywhere, even offline.

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Questions

What notes are in a C7 chord?: C7 is C, E, G, Bb: the 1, 3, 5, ♭7 of C.
How do you play C7 on guitar?: E7-Shape (6th String Root): 8 10 8 9 8 8; A7-Shape (5th String Root): x 3 5 3 5 3; Open / C7 Shape: x 3 2 3 1 0 (low E to high E, x = don't play the string).
What scale goes with C7?: Scales on C that contain every note of C7: C Mixolydian, C Phrygian Dominant, C Lydian Dominant, C Half-Whole Diminished, C Bebop Dominant, C Mixolydian b6.

Dominant 7th chords in every key

C7 C#7 D7 Eb7 E7 F7 F#7 G7 Ab7 A7 Bb7 B7