A# major 7th · Piano
A#maj7 Chord on Piano
The A#maj7 chord (A# major 7th) is built from the notes A#, D, F and A. The keyboard diagram below shows exactly which keys to press. The same chord is also written Bbmaj7; both spellings sound identical.
Chord diagrams
Notes in this chord
- A♯
- D
- F
- A
Degrees: 1 – 3 – 5 – 7
Also written: Bbmaj7
How to play
To play A#maj7 on piano, press A#, D, F and A together. In root position the lowest note is A#, and the finger numbers follow the keys left to right in the diagram.
Theory behind the chord
Major seventh chords keep the bright major triad but add the leading tone a semitone below the root. The result is the soft, floating sound heard throughout bossa nova, soul and neo-soul. On A#maj7 this structure sits on the root A#, so the degrees 1 – 3 – 5 – 7 map onto A#, D, F and A.
Frequently asked questions
- Which notes are in the A#maj7 chord?
- A#maj7 contains the notes A#, D, F and A. Relative to the root these are the degrees 1 – 3 – 5 – 7.
- Are A#maj7 and Bbmaj7 the same chord?
- Yes. A#maj7 and Bbmaj7 are enharmonically identical — the spelling differs but the frets and keys are the same. Which name is used depends on the key of the piece.
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