Finger Positions

Fdim/A# diagram
Root Note F
Name F diminished over A#
Intervals 1P-3m-5d
Relative Minor Dm
Notes A#, F, Ab, B
Aliases Fdim, F°, Fo

How to play the Fdim/A# Chord

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

Common Progressions

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

I-V-vi-IV

F → C → Dm → Bb

vi-IV-I-V

Dm → Bb → F → C

The Diatonic Family

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

Triads

F Gm Am Bb C Dm Edim

7ths

Fmaj7 Gm7 Am7 Bbmaj7 C7 Dm7 Em7b5

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 A#, F, Ab, B.

Acoustic & Digital Analysis

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

MIDI Numbers 70, 65, 68, 71
Frequencies (Hz)

466.1637615180899, 349.2282314330039, 415.3046975799451, 493.8833012561241