A# Minor Major 7th

Notes:A# – C# – F – A
Formula:R-m3-P5-M7
Intervals:P1-m3-P5-M7
Scale Degrees:1-b3-5-7

Introduction

The A# Minor Major 7th piano chord (A#mMaj7) consists of the notes A#, C#, F, A. It is a minor triad with an added major 7th, giving it a dark and complex character with strong tension, often used in jazz and minor key progressions. Formula: R-m3-P5-M7 | Scale degrees: 1-b3-5-7.

Enharmonic equivalent: A♯ is enharmonically equivalent to B♭. See Bb Minor Major 7th.

Notes

Notes:A# – C# – F – A

A# Minor Major 7th Inversions

PositionNotes
Root PositionA#4 – C#5 – F5 – A5
1st InversionC#5 – F5 – A5 – A#5
2nd InversionF5 – A5 – A#5 – C#6
3rd InversionA#4 – C#5 – F5 – A4

Key Signature

The key of A# Minor Major 7th has 7 sharps: F♯, C♯, G♯, D♯, A♯, E♯, B♯.

FCGDAEB

Theory: Intervals

Formula: R-m3-P5-M7
Intervals: P1-m3-P5-M7

The A# Minor 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# Minor Major 7th — Frequently Asked Questions

What notes are in the A# Minor Major 7th chord?

A# Minor Major 7th is built from the A# root. Check the interactive keyboard above for exact notes and fingering.

How is the A# Minor Major 7th chord used in music?

A# Minor Major 7th appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Minor Major 7th).

What is the fingering for A# Minor 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# Minor Major 7th?

Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.

Why does A# Minor Major 7th sound so tense?

The minor third and major seventh are only a semitone apart when inverted, creating dramatic tension.

Practice Tips

  • Play A#m then add the major 7th — hear the dramatic tension.
  • The descending chromatic line is one of the most famous chord movements.
  • Compare with A#m7.
  • Film noir and spy theme sound.
  • Harmonic minor i chord.
  • The tension between minor 3rd and major 7th defines this chord.