Chord · Piano
A 7 Chord · Piano
Interactive keyboard
Highlighted notes form this chord.
Notes
A · C♯ · E · G
Root: A
Intervals
1 · 3 · 5 · ♭7
How it is built
This chord starts on A and applies the intervals 1, 3, 5, ♭7. The result contains 4 distinct pitch classes per octave.
Explore related combinations
Guide and musical context
About A 7 Piano Chord
A 7 Piano chord contains A, C♯, E, G. Its sound is tense and strongly directional.
Character and sound
Tense and strongly directional.
Musical context and history
The dominant seventh is central to functional harmony: a major triad plus minor seventh creates a strong tendency to resolve. It is also fundamental to blues and jazz.
How and where it is used
Use it as a dominant that pushes toward another chord, or as a stable groove color in blues, funk and rock.
On piano, the notes can be distributed between both hands and across different octaves. The interactive keyboard makes it easy to verify pitches and experiment with inversions or registers without changing the harmony. Everything you see and hear on this page comes from the same note set shown above.
Harmonic and musical relationships
As a dominant sonority on A, a common functional resolution moves toward D. Alterations and extensions change the color while preserving that tension-and-resolution reference.
The formula on this page is 1 · 3 · 5 · ♭7 and, from A, produces the notes A · C♯ · E · G.
Frequently asked questions
What notes are in the A 7 Piano chord?
The notes are A, C♯, E, G.
What is its interval formula?
The formula is 1 · 3 · 5 · ♭7.
How does it sound and what is it used for?
Tense and strongly directional. Use it as a dominant that pushes toward another chord, or as a stable groove color in blues, funk and rock.
How can I check it on Piano?
Use the interactive diagram on this page and press Play or Note by note. The highlighted positions, written notes and playback all use the same pitch collection.