Key

F#mMaj7b5 guitar chord

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About F#mMaj7b5

F#mMaj7b5 names three separate instructions: a minor 3rd, , and major 7th. The result is F#, A, C and E#.

The flat 5th is the only change from . It must sound, or the voicing is only . This is neither a half-diminished nor diminished-seventh chord.

Also written F#mM7b5 or F#m(maj7)b5.

F# diminished scale
+G#BDD#
Contains F#mMaj7b5 and adds ninth, eleventh, sharp fifth and thirteenth.

E# → Eb
Replace the major seventh with the diminished seventh.
See F#dim7 chord →
A → A#
Raise the minor third to the major third.
See F#maj7b5 chord →
E# → E
Lower the major seventh to the flat seventh.
See F#m7b5 chord →
C → C#
Raise the flat fifth to the fifth.
See F#mMaj7 chord →

The common shapes and the derived voicings come from different places, and both are explained in how this site is built.