C7 Piano Chord

The C7 chord is a dominant seventh built on the root note C. It contains the notes C, E, G, A#.

How to play C7

CEGCEGA#

Press all highlighted keys together. Use any comfortable fingering — for a right-hand triad, thumb on root, middle on 3rd, pinky on 5th is standard.

Chord theory

Root note
C
Quality
Dominant seventh
Notes (intervals)
C (Root), E (M3), G (P5), A# (m7)
Number of notes
4

Related chords

Songs that use the C7 chord(1,326 total)

Learn more chords

Master one chord at a time. Once C7 feels natural, try the C chord, or browse easy piano songs to put it in context.