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F#m7b5 chord

F# half-diminished 7th · also written Gbm7b5

C4
F#
A
C
E

Want it in context? Open F#m7b5 on the full piano.

Notes

  • F#
    R
  • A
    b3
  • C
    b5
  • E
    b7

Formula: R – b3 – b5 – b7

F#m7b5 inversions

The same notes, with a different note in the bass.

Root position F#m7b5

C4
F#
A
C
E

1st inversion F#m7b5/A

C4
A
C
E
F#

2nd inversion F#m7b5/C

C
E
F#
A
C6

3rd inversion F#m7b5/E

C5
E
F#
A
C

FAQ

What notes are in the F#m7b5 chord?

The F# half-diminished 7th chord (F#m7b5) has 4 notes: F#, A, C and E.

How do you play F#m7b5 on the piano?

Put your right hand on F#, A, C and E, starting from F#. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).

What is the formula of a half-diminished 7th chord?

R – b3 – b5 – b7 (in semitones from the root: 0, 3, 6, 10).

Is F#m7b5 the same as Gbm7b5?

Yes. F# and Gb are the same key on the piano (enharmonic), so F#m7b5 and Gbm7b5 sound the same.