A dominant seventh
A7 Piano Voicings
A7 is a dominant chord: the V that wants to resolve. Its flat seventh creates the tension at the heart of every ii-V-I, making A7 one of the four core shapes to drill.
Drill A7 in all 12 keysThe notes in A7
- A R
- C# 3
- E 5
- G ♭7
A7 voicings on piano
Each voicing is the exact shape the trainer drills. Press play to hear it — as a block chord or rolled note by note.
Root Position
A · C# · E · G R · 3 · 5 · ♭7
Shell Voicing
A · C# · G R · 3 · ♭7
Rootless A
C# · E · G · B 3 · 5 · ♭7 · 9
Rootless B
G · B · C# · E ♭7 · 9 · 3 · 5
Where A7 fits in a ii-V-I
A7 is a dominant chord: the V that wants to resolve. Its flat seventh creates the tension at the heart of every ii-V-I, making A7 one of the four core shapes to drill.
The fastest way to internalise A7 is to drill it in context across all 12 keys until the shape is automatic.
Practice the full ii-V-I progressionA7 — frequently asked questions
What notes are in A7?
A7 contains A, C#, E, G — root, major third, perfect fifth and flat seventh. The flat seventh is what makes it a dominant chord.
What is the shell voicing for A7?
The A7 shell voicing is root, third and flat seventh. The third and seventh — the guide tones — carry the dominant sound.
Why does A7 sound unresolved?
The major third and flat seventh of A7 form a tritone, an unstable interval that pulls strongly toward resolution.