Finger Positions

A#sus4/F# diagram
Root Note A#
Name A# suspended fourth over F#
Intervals 1P-4P-5P
Relative Minor Gm
Notes F#, A#, D#, F
Aliases A#sus4, A#sus

How to play the A#sus4/F# Chord

The A#sus4/F# is a fundamental suspended 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# suspended fourth over F# is built using the 1P, 4P, 5P intervals. In the key of A# Major, this chord functions as the I chord.

Common Progressions

In music composition, the A#sus4/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
Major Minor Minor Blues Melodic Minor Harmonic Minor Bebop Dorian Mixolydian Phrygian Ionian Pentatonic Mixolydian Pentatonic Ritusen Egyptian Vietnamese 1 Kumoijoshi

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

Acoustic & Digital Analysis

Digital footprint of the A#sus4/F# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 66, 70, 63, 65
Frequencies (Hz)

369.9944227116344, 466.1637615180899, 311.1269837220809, 349.2282314330039