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Chords in the key of A♯ Major

The seven chords of A♯ Major and the 7th chord on each, with the key signature and the keys closest to it.

A♯ Major is a theoretical key. Scores almost always write it as B♭ Major.Open B♭ MajorLooking for A Major?

Short answer

The key of A♯ Major contains seven diatonic chords: A♯, B♯m, C𝄪m, D♯, E♯, F𝄪m, G𝄪°. They're built on each degree of the A♯ Major scale.

Tonic
A♯
Key signature
10 sharps
Scale
A♯ B♯ C𝄪 D♯ E♯ F𝄪 G𝄪
Relative key
G Natural Minor
Dominant
E♯
Parallel key
A♯ Natural Minor

Diatonic chords in A♯ Major

Build a triad on each note of the A♯ Major scale and you get these seven chords. Add one more scale note on top and you get the 7th chord beside it.

DegreeTriad7th chordHear
IA♯A♯maj7
iiB♯mB♯m7
iiiC𝄪mC𝄪m7
IVD♯D♯maj7
VE♯E♯7
viF𝄪mF𝄪m7
vii°G𝄪°G𝄪m7♭5

Key signature of A♯ Major

Written out, A♯ Major would need 10 sharps, which is only possible with double sharps. That's why published music uses B♭ Major instead.

Practise reading key signatures

A♯ Major on the piano

Show:
A♯ Major on the pianoB♯C𝄪E♯F𝄪G𝄪B♯C𝄪E♯F𝄪G𝄪D♯A♯D♯A♯A♯ Major - A♯ · B♯ · C𝄪 · D♯ · E♯ · F𝄪 · G𝄪

Common progressions in A♯ Major

The most popular chord progressions written in this key. Click any progression to hear it.

Questions people ask

What chords are in the key of A♯ Major?
The key of A♯ Major contains seven diatonic chords: A♯, B♯m, C𝄪m, D♯, E♯, F𝄪m, G𝄪°. They're built on each degree of the A♯ Major scale.
How many sharps or flats are in A♯ Major?
Written out, A♯ Major would need 10 sharps, which is only possible with double sharps. That's why published music uses B♭ Major instead.
What are the 7th chords in A♯ Major?
Adding a seventh to each chord of A♯ Major gives A♯maj7, B♯m7, C𝄪m7, D♯maj7, E♯7, F𝄪m7, G𝄪m7♭5.
What is the relative key of A♯ Major?
It's G Natural Minor. It uses exactly the same notes and key signature as A♯ Major, but its music centres on G.
What are the most common progressions in A♯ Major?
Pop and rock songs in A♯ Major usually rely on I-V-vi-IV, I-IV-V and ii-V-I. Each appears in our progression library with audio.
Why do these chords sound good together?
Every chord in A♯ Major is built using only notes from the A♯ Major scale, so they share the same tonal center and naturally resolve to the I chord.
How do I transpose a song to A♯ Major?
Use our free Chord Transposer, paste the original chords and shift them to A♯ Major. The tool keeps the relationships between chords intact.