The A Power chord is a two-note chord made up of A and E. It is built from a root and perfect fifth.
Construction
A Power = Root + Perfect 5th = A · E
| Note | Interval | Degree |
|---|---|---|
| A | Root | 1 |
| E | Perfect 5th | 5 |
A Power Inversions
| Position | Notes |
|---|---|
| Root Position | A – E |
| 1st Inversion | E – A |
| 2nd Inversion | — |
Key Signature
A chord has no key signature of its own, but the A Power 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 Power — Frequently Asked Questions
What is the A Power chord on piano?
The A Power chord contains the notes A – E. On piano, play these notes together to sound the chord.
What notes are in the A Power chord?
The A Power chord (A5) contains 2 notes: A, E. Formula: R-P5.
How is A5 used in music?
A5 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 A5?
A5 uses scale degrees 1-5, giving it its distinctive sound.