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A♯ Major 7th

chord·/chords/major-7th/a-sharp/

The A♯ Major 7th chord contains the notes A♯, C♯♯, E♯, and G♯♯.

Notes: A♯, C♯♯, E♯, G♯♯ · Piano keys: A♯ C♯♯ E♯ G♯♯

Reviewed for accuracy · Last updated June 2026 · Maintained by Justin Evans

B♭ Major 7th
This is the same chord as B♭ Major 7th — the same keys on the keyboard, spelled with flats.
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A♯maj7
A♯ – C♯♯ – E♯ – G♯♯
Formula:R-M3-P5-M7
Intervals:P1-M3-P5-M7
Scale Degrees:1-3-5-7

Practice A♯ Major 7th

Reading about it is one thing. Drilling it is what makes it automatic.

Chord Drill →Timed drills — build speed and recognitionPractice Room →Plug in a MIDI keyboard for real-time feedback

Introduction

A# Major 7th piano chord, root position — A#, D, F, A
The A# Major 7th chord in root position on a piano keyboard, notes A#, D, F, A.

The A♯ Major 7th chord is a four-note chord made up of A♯, C♯♯, E♯, and G♯♯. It is built from a root, major third, perfect fifth, and major seventh.

Notes

Notes:A♯ – C♯♯ – E♯ – G♯♯

A♯ Major 7th Inversions

A# Major 7th piano chord, 1st inversion — D, F, A, A#
The A# Major 7th chord, 1st inversion, on a piano keyboard.
A# Major 7th piano chord, 2nd inversion — F, A, A#, D
The A# Major 7th chord, 2nd inversion, on a piano keyboard.
A# Major 7th piano chord, 3rd inversion — A, A#, D, F
The A# Major 7th chord, 3rd inversion, on a piano keyboard.
PositionNotes
Root PositionA♯ – C♯♯ – E♯ – G♯♯
1st InversionC♯♯ – E♯ – G♯♯ – A♯
2nd InversionE♯ – G♯♯ – A♯ – C♯♯
3rd InversionG♯♯ – A♯ – C♯♯ – E♯

Key Signature

A chord has no key signature of its own, but the A♯ Major 7th 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:

C1C2C3C4C5DFC6C7C8A#
I — A♯ Major (major)
DegreeNumeralChordQuality
1IA♯ MajorMajor
2iiC MinorMinor
3iiiD MinorMinor
4IVD♯ MajorMajor
5VF MajorMajor
6viG MinorMinor
7vii°A DiminishedDiminished

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 is the A♯ Major 7th chord on piano?
The A♯ Major 7th chord contains the notes A♯ – C♯♯ – E♯ – G♯♯. On piano, play these notes together to sound the chord.
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.

References & Further Reading

How this chord page is sourced & verified

The note names, intervals, fingering, and harmony on this page are drawn from the established body of Western music theory and verified against the conventions below — the same fundamentals taught in conservatories and music programs. We list categories of source material rather than individual titles, and reference the standards themselves rather than any single edition.

  • Standard music theory texts — Widely taught fundamentals of pitch, rhythm, and notation.
  • Western tonal harmony conventions — Established rules for chord construction, voice leading, and key relationships.
  • Interval and chord construction standards — The conventional spelling of intervals, triads, sevenths, and extensions.
  • Scale and mode theory — The common derivation of major, minor, pentatonic, blues, and modal scales.
  • Piano pedagogy and technique references — Long-standing practices for fingering, hand position, and practice.

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