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Guitar chord
C7 Chord
C7 is a dominant 7th chord rooted on C. A major triad with a flattened 7th on top. Restless by design — it wants to resolve, which is why blues and every V chord lives here.
The notes
Every C7 chord anywhere on the neck is some arrangement of these 4 notes.
C1
E3
G5
B♭♭7
How to play it
4 shapes, low on the neck to high. Tap any diagram to hear it. Green marks the root.