Learn › A Dominant 7 Chord on Guitar (A7)
New Released in April 2026
A Dominant 7 Chord on Guitar (A7)
To play A7 on guitar, press the strings shown below; some strings ring open. Then strum from the 5th string down: the notes A, C#, E, G ring together. Here is the shape, finger by finger, plus the chords you will play next to it.
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- MIDI keyboard
- Digital or acoustic piano
- Guitar
- Computer, phone or tablet
A7 chord diagram
Finger by finger
- Middle: 4th string (D), fret 2
- Ring: 2nd string (B), fret 2
Which strings to strum
x02020: × = do not play, 0 = open string.
The notes inside A7, string by string
| 5th string (A) | open: A |
|---|---|
| 4th string (D) | fret 2: E |
| 3rd string (G) | open: G |
| 2nd string (B) | fret 2: C# |
| 1st string (high E) | open: E |
From A to A7: 3rd string (G): fret 2 → open.
Slide this shape along the neck: fret 3 = G7, fret 4 = Ab7, fret 6 = Bb7, fret 7 = B7.
Another way to play A7
This shape has the same notes higher up the neck. Use it when the chord before or after sits nearby.
Where A7 is used
A7 pulls towards D: play A7, then D, and you hear it land. It is the V7 chord of D major.
Practise A7 with the microphone
Strum A7 near the microphone when it comes up in ChordRunner: the game checks all four notes, A, C#, E, G, and moves on. MIDI keyboard or microphone, both work. MIDI keyboard or microphone, both work.
Play the demoCommon questions
What notes are in the A7 guitar chord?
A dominant 7 has three notes: A, C#, E, G. On the guitar some of them are doubled on different strings, so all six (or five) strings sound like one chord.
What is the difference between A7 and A on guitar?
A7 adds one note to A: G, on top of A C# E. From A to A7: 3rd string (G): fret 2 → open.
Which fingers do I use for A7?
Middle finger: 4th string (D), fret 2, ring finger: 2nd string (B), fret 2.
Does ChordRunner hear A7 on guitar?
Yes. Strum it near the phone or computer microphone and the game checks the four notes A, C#, E, G. A USB MIDI keyboard works too.
Your instrument is the controller.
ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.
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