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 2 flats (B♭, E♭).
B♭E♭
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
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 (A#5) contains 2 notes: A#, F. Formula: R-P5.
How is A#5 used in music?
A#5 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 A#5?
A#5 uses scale degrees 1-5, giving it its distinctive sound.