Finger Positions

A#dim/F# diagram
Root Note A#
Name A# diminished over F#
Intervals 1P-3m-5d
Relative Minor Gm
Notes F#, A#, C#, E
Aliases A#dim, A#°, A#o

How to play the A#dim/F# Chord

The A#dim/F# is a fundamental diminished 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# diminished over F# is built using the 1P, 3m, 5d intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#dim/F# 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
Minor Blues Diminished Locrian Locrian Pentatonic Super Locrian Pentatonic Altered Locrian #2 Ultralocrian Locrian 6 Dorian #4 Lydian Diminished Hungarian Minor Hungarian Major Flamenco Todi Raga

* 15 scales found containing the notes F#, A#, C#, E.

Acoustic & Digital Analysis

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

MIDI Numbers 66, 70, 61, 64
Frequencies (Hz)

369.9944227116344, 466.1637615180899, 277.1826309768721, 329.6275569128699