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F♯7♭5 is the F♯ dominant 7th flat 5 guitar chord. It uses the notes F♯, A♯, C, and E and the interval formula 1-3-♭5-♭7.
The F♯ dominant 7th flat 5 dominant 7th flat 5 chord introduces a diminished fifth C to the dominant 7th, producing a dissonant, unstable tension. This unresolved sound is commonly used in jazz and blues for dramatic harmonic movement and suspense.
Also written as F♯dom7♭5.
These are quick-start shapes for players who want the answer first and the deeper theory second.
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Each note below shows how the chord is built from its root. This is the theory layer underneath the fretboard shapes.
The root anchors the chord and defines its tonal center.
This note defines the chord's major quality and brings brightness to the sound.
The flattened fifth adds tension and a restless, unstable edge.
The minor seventh adds bluesy or jazzy tension that wants to move onward.
Every shape is shown with its diagram and exact fingering instructions.
F♯7♭5 uses the notes F♯, A♯, C, and E. Its interval formula is 1-3-♭5-♭7.
F♯7♭5 is also written as F♯dom7♭5.
Place the 1st finger on the 4th fret of the 4th string. Place the 2nd finger on the 5th fret of the 3rd string. Place the 3rd finger on the 5th fret of the 2nd string. Place the 4th finger on the 6th fret of the 1st string. Strum from the 4th string down.
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