Finger Positions

F6b5/A# diagram
Root Note F
Name F over A#
Intervals 1P-3M-5P-6M-11A
Relative Minor Dm
Notes A#, F, A, C, D, B
Aliases FM6#11, FM6b5, F6#11, F6b5

How to play the F6b5/A# Chord

The F6b5/A# is a fundamental major 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 over A# is built using the 1P, 3M, 5P, 6M, 11A intervals. In the key of F Major, this chord functions as the I chord.

Common Progressions

In music composition, the F6b5/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
Lydian Lydian Dominant Hungarian Major Lydian #9 Ichikosucho Half-Whole Diminished Composite Blues Chromatic

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

Acoustic & Digital Analysis

Digital footprint of the F6b5/A# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 70, 65, 69, 60, 62, 71
Frequencies (Hz)

466.1637615180899, 349.2282314330039, 440, 261.6255653005986, 293.6647679174076, 493.8833012561241