Dominant 7th · beginner
A dominant 7th(A7)
A7 is one of the easiest seventh chords — two fingers with an open string ringing between them. Essential for blues in D and E, and a friendly entry into dominant harmony.
Notes
Intervals
Finger placement
- 1Middle finger (2): 2nd fret of the D string.
- 2Ring finger (3): 2nd fret of the B string.
Common mistakes
- Muting the open G string between the two fretted notes.
- Using A major fingering habits and covering too many strings.
- Forgetting to mute or skip the low E.
Coaching tips
- Two fingers, wide arches — the open G between them must ring.
- Think 'gap chord': fretted D and B with open G singing in the middle.
- Pair A7 with D and E7 for blues in D — the classic three-chord set.
Troubleshooting
Open G is dead
Raise your palm knuckles higher above the fretboard so both fingers stand vertically.
Sounds muddy on the bass side
Start the strum on the open A string — skip the low E.
Progressions that use A7
Frequently asked questions
What notes are in the A dominant 7th chord?
A dominant 7th contains A, C#, E, G — the intervals R, 3, 5, b7 from the root A.
Is A dominant 7th a beginner chord?
A dominant 7th is rated beginner. A7 is one of the easiest seventh chords — two fingers with an open string ringing between them. Essential for blues in D and E, and a friendly entry into dominant harmony.
A dominant 7th: open g is dead — what should I do?
Raise your palm knuckles higher above the fretboard so both fingers stand vertically.
A dominant 7th: sounds muddy on the bass side — what should I do?
Start the strum on the open A string — skip the low E.