A♯ Major 7th
Also Known As
Hear the A♯ Major 7th chord played for you.
A♯maj7
A♯ – D – F – A
Formula:R-M3-P5-M7
Intervals:P1-M3-P5-M7
Scale Degrees:1-3-5-7
Introduction
The A♯ Major 7th chord is a four-note chord made up of A♯, D, F, and A. It is built from a root, major third, perfect fifth, and major seventh.
The A# Major 7th piano chord (A#maj7) consists of the notes A#, D, F, A. It is a major triad with an added major 7th, giving it a dreamy, sophisticated, and jazzy sound. Formula: R-M3-P5-M7 | Scale degrees: 1-3-5-7.
Notes
A♯ Major 7th Inversions
| Position | Notes |
|---|---|
| Root Position | A#4 – D5 – F5 – A5 |
| 1st Inversion | D5 – F5 – A5 – A#5 |
| 2nd Inversion | F5 – A5 – A#5 – D6 |
| 3rd Inversion | A#4 – D5 – F5 – A4 |
Key Signature
The key of A# Major 7th (enharmonically equivalent to Bb Major 7th) has 2 flats.
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 diatonic triads built on each degree of the A# major scale:
C
D
E
F
G
A
B
C
D
E
F
G
A
B
I — A♯ Major (major)
Theory: Intervals
Formula: R-M3-P5-M7
Intervals: P1-M3-P5-M7
The A♯ Major 7th is built by stacking intervals from the root note. The formula R-M3-P5-M7 describes the scale degrees used. The intervals P1-M3-P5-M7 show the distance between each note in the chord.
A♯ Major 7th — Frequently Asked Questions
What notes are in the A# Major 7th chord?
A# Major 7th is built from the A# root. Check the interactive keyboard above for exact notes and fingering.
How is the A# Major 7th chord used in music?
A# Major 7th appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Major 7th).
What is the fingering for A# Major 7th?
See the fingering chart above. Right hand typically uses thumb on root. Left hand uses pinky on root.
What are the inversions of A# Major 7th?
Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.
Practice Tips
- Dreamy, warm, sophisticated sound.
- Compare with A#7 (dominant).
- Jazz ballad tonic chord.
- Bossa nova favourite.
- The major 7th creates a floating quality.
- Try as a resting chord after tension.
Related Tools
Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.