Popular fretboard positions with fingering suggestions
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C7 is the C dominant 7th guitar chord. It uses the notes C, E, G, and B♭ and the interval formula 1-3-5-♭7.
The C dominant 7th dominant 7th chord, formed by adding a minor seventh B♭ to the major triad, creates tension that seeks resolution, typically to the tonic. The combination of the major third E and minor seventh B♭ provides a bluesy, soulful feel, making it essential in jazz, blues, and classical cadences.
Also written as Cdom7.
These are quick-start shapes for players who want the answer first and the deeper theory second.
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Each note below shows how the chord is built from its root. This is the theory layer underneath the fretboard shapes.
The root anchors the chord and defines its tonal center.
This note defines the chord's major quality and brings brightness to the sound.
The fifth reinforces stability and gives the chord its strong harmonic frame.
The minor seventh adds bluesy or jazzy tension that wants to move onward.
Every shape is shown with its diagram and exact fingering instructions.
C7 uses the notes C, E, G, and B♭. Its interval formula is 1-3-5-♭7.
C7 is also written as Cdom7.
Place the 1st finger on the 1st fret of the 2nd string. Place the 2nd finger on the 2nd fret of the 4th string. Place the 3rd finger on the 3rd fret of the 5th string. Place the 4th finger on the 3rd fret of the 3rd string. Let the first string ring open. Strum from the 5th string down.
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