Chord
F♯m7♭5 is a half-diminished seventh chord with the notes F♯, A, C, E. Also written F♯ø, F♯–7♭5. The same chord spelled from G♭ is G♭m7♭5.
| Note | Interval | Semitones |
|---|---|---|
| F♯ | root | 0 |
| A | minor 3rd | 3 |
| C | diminished 5th | 6 |
| E | minor 7th | 10 |
| Root position | F♯ – A – C – E | |
| 1st inversion | A – C – E – F♯ (F♯m7♭5/A) | |
| 2nd inversion | C – E – F♯ – A (F♯m7♭5/C) | |
| 3rd inversion | E – F♯ – A – C (F♯m7♭5/E) |
A half-diminished chord (m7♭5) is a diminished triad with a minor 7th added. It is the vii chord of major keys and the ii chord of minor keys, as in the minor ii–V–i.
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