Finger Positions

Root Note A#

Name A# minor major seventh flat fifth over C#

Intervals 1P-3M-5d-7M

Relative Minor Gm

Notes C#, A#, D, E, A

Aliases

How to play the A#mmaj7b5/C# Chord

The A#mmaj7b5/C# is a fundamental major chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the A# minor major seventh flat fifth over C# is built using the 1P, 3M, 5d, 7M intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#mmaj7b5/C# chord is often used to create tension or resolution.

I-V-vi-IV

A# → F → Gm → D#

vi-IV-I-V

Gm → D# → A# → F

The Diatonic Family

Understanding the "family" of chords that belong to A# helps with transposition and ear training.

Triads

A# Cm Dm D# F Gm Adim

7ths

A#maj7 Cm7 Dm7 D#maj7 F7 Gm7 Am7b5

Scale Compatibility

View All Scales

* 0 scales found containing the notes C#, A#, D, E, A.

Acoustic & Digital Analysis

Digital footprint of the A#mmaj7b5/C# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 61, 70, 62, 64, 69

Frequencies (Hz)

277.1826309768721, 466.1637615180899, 293.6647679174076, 329.6275569128699, 440