A7 chord (A dominant seventh) on piano
A7 (A dominant seventh) has four notes: A, C sharp, E and G. Its formula is 1, 3, 5, b7. In major keys, A7 is the V7 chord in D major.
A7 inversions and fingering
A C# E G · RH 1-2-3-5 · LH 5-3-2-1
C# E G A · RH 1-2-4-5 · LH 5-3-2-1
E G A C# · RH 1-2-3-5 · LH 5-3-2-1
G A C# E · RH 1-2-3-5 · LH 5-4-2-1
A C# G · LH 5-3-1
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| Symbol | A7 |
|---|---|
| Also written | Adom7 |
| Notes | A C# E G |
| Formula | 1 3 5 b7 |
| Intervals | root, major third, perfect fifth, minor seventh |
| Type | Dominant seventh chord |
A7 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C#3 (3), E3 (5), G3 (flat 7), A3 (1), C#4 (3), E4 (5), G4 (flat 7), A4 (1).
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Questions
What notes are in the A7 chord?
A7 (A dominant seventh) has four notes: A, C sharp, E and G. Its formula is 1, 3, 5, b7. A is the root, C# is the major third, E is the perfect fifth and G is the minor seventh.
How do you play A7 on piano?
Play A, C#, E and G together. Root position: A C# E G · RH 1-2-3-5 · LH 5-3-2-1.
What key is A7 in?
In major keys, A7 is the V7 chord in D major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between A7 and A?
A7 is A (A, C# and E) with a flat 7th added: G.