F#m7b5 (Gbm7b5) Guitar Chord
F#m7b5 (F# half-diminished seventh) is a four-note chord made from F#, A, C and E. A half-diminished chord is a diminished triad with a minor seventh on top. It is the ii chord of a minor key, so it opens the minor ii-V-i that jazz leans on.
F#m7b5 F# half-diminished seventh
Open position1 / 4
Notes
- F#1
- Ab3
- Cb5
- Eb7
Built from the root F#, the minor third A, the flat fifth C and the minor seventh E.
Also written Gbm7b5: Gb Bbb Dbb Fb
How to play F#m7b5
Frets from low E to high E; x means don't play that string.
Easiest shape to start with: Open position (202210). It has 2 open strings and nothing above fret 2.
Keys with F#m7b5
Every note of F#m7b5 is in these keys. The numeral is its place in the key.
Major keys
- viiø7 in G major
Minor keys
- iiø7 in E minor