The A 7sus4 chord is a four-note chord made up of A, D, E, and G. It is built from a root, perfect fourth, perfect fifth, and minor seventh.
Construction
A 7sus4 = Root + Perfect 4th + Perfect 5th + Minor 7th = A · D · E · G
| Note | Interval | Degree |
|---|---|---|
| A | Root | 1 |
| D | Perfect 4th | 11 |
| E | Perfect 5th | 5 |
| G | Minor 7th | ♭7 |
A 7sus4 Inversions
| Position | Notes |
|---|---|
| Root Position | A – D – E – G |
| 1st Inversion | D – E – G – A |
| 2nd Inversion | E – G – A – D |
| 3rd Inversion | G – A – D – E |
Key Signature
A chord has no key signature of its own, but the A 7sus4 is the tonic (I) chord of A Major, whose key signature has 3 sharps (F♯, C♯, G♯).
F♯C♯G♯
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
F♯C♯G♯D♯A♯E♯B♯
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of A Major
These are the triads built on each degree of the A major scale:
A 7sus4 — Frequently Asked Questions
What is the A 7sus4 chord on piano?
The A 7sus4 chord contains the notes A – D – E – G. On piano, play these notes together to sound the chord.
What notes are in the A 7sus4 chord?
The A 7sus4 chord (A7sus4) contains 4 notes: A, D, E, G. Formula: R-P4-P5-m7.
How is A7sus4 used in music?
A7sus4 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for A7sus4?
A7sus4 uses scale degrees 1-4-5-b7, giving it its distinctive sound.