F7♯5
F Dominant 7th Sharp 5 — the augmented dominant — the raised fifth leans hard into the resolution a fifth below.
The keys
F – A – C♯ – E♭
What's inside F7♯5
| Note | Interval from root | Degree |
|---|---|---|
| F | Root | 1 |
| A | Major 3rd | 3 |
| C♯ | Augmented 5th | #5 |
| E♭ | Minor 7th | b7 |
Inversions
| Position | Keys (low → high) |
|---|---|
| Root position | F4 – A4 – D♭5 – E♭5 |
| 1st inversion | A4 – D♭5 – E♭5 – F5 |
| 2nd inversion | D♭5 – E♭5 – F5 – A5 |
| 3rd inversion | E♭5 – F5 – A5 – D♭6 |
A working voicing
Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:
| Hand | Keys |
|---|---|
| Left (shell) | F2 – E♭3 |
| Right (colour) | A4 – D♭5 |
Where F7♯5 lives
Hard resolution
F7♯5 → B♭m9
Altered dominants resolve with maximum drama — especially into minor.
Chromatic approach
Cm7 → F7♯5 → B♭
The alteration sharpens the pull of the standard two-five.
Put F7♯5 under your fingers
Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.
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