Finger Positions

F#m#5/B diagram
Root Note F#
Name F# minor augmented over B
Intervals 1P-3m-5A
Relative Minor D#m
Notes B, F#, A, D
Aliases F#m#5, F#-#5, F#m+

How to play the F#m#5/B Chord

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

Common Progressions

In music composition, the F#m#5/B chord is often used to create tension or resolution.

I-V-vi-IV

F# → C# → D#m → B

vi-IV-I-V

D#m → B → F# → C#

The Diatonic Family

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

Triads

F# G#m A#m B C# D#m Fdim

7ths

F#maj7 G#m7 A#m7 Bmaj7 C#7 D#m7 Fm7b5

Scale Compatibility

View All Scales
Minor Harmonic Minor Diminished Phrygian Locrian Vietnamese 1 Pelog Hirajoshi Malkos Raga Augmented Altered Locrian #2 Ultralocrian Augmented Heptatonic Balinese

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

Acoustic & Digital Analysis

Digital footprint of the F#m#5/B chord for MIDI programming and synthesizer sound design.

MIDI Numbers 71, 66, 69, 62
Frequencies (Hz)

493.8833012561241, 369.9944227116344, 440, 293.6647679174076