Finger Positions

A#mbb5/F# diagram
Root Note A#
Name A# minor double flat fifth over F#
Intervals 1P-3m-4P
Relative Minor C#
Notes F#, A#, C#, D#
Aliases

How to play the A#mbb5/F# Chord

The A#mbb5/F# is a fundamental minor 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 double flat fifth over F# is built using the 1P, 3m, 4P intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#mbb5/F# chord is often used to create tension or resolution.

I-V-vi-IV

A#m → Fm → F# → D#m

vi-IV-I-V

F# → D#m → A#m → Fm

The Diatonic Family

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

Triads

A#m Cdim C# D#m Fm F# G#

7ths

A#m7 Cm7b5 C#maj7 D#m7 Fm7 F#maj7 G#7

Scale Compatibility

View All Scales

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

Acoustic & Digital Analysis

Digital footprint of the A#mbb5/F# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 66, 70, 61, 63
Frequencies (Hz)

369.9944227116344, 466.1637615180899, 277.1826309768721, 311.1269837220809