Dominant Seventh Chords are popular in blues music because of their naturally bluesy sound.
Dominant Seventh Chords are played by adding the flat 7th note (one full step down from the octave) of the scale to a major triad or chord, and are commonly referred to by their root note and the number 7.
Movable Dominant 7 (dom7) Chord Forms
These chord forms can be moved up and down the neck to play any major7 chord.
Root on 6th String
G7
Root on 5th String
C7
Root on 4th String
B7
Examples of Dominant Seventh chords with the roots on the Low E (6th) string.
Click on a chord to view more of its Dominant Seventh Chord forms
Dominant 7 Chord Formula = 1 + 3 + 5 + 7♭
Notes of the C Major Scale
| C | D | E | F | G | A | B | C |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
C Dominant 7 Chord = C + E + G + B♭