Notes in F♯m7♭5
The F♯m7♭5 chord contains 4 notes: F♯, A, C, E
Intervals
| Interval | Semitones | Note | Function |
|---|---|---|---|
| R | 0 | F♯ | Root |
| ♭3 | 3 | A | Minor 3rd |
| ♭5 | 6 | C | Diminished 5th |
| ♭7 | 10 | E | Minor 7th |
About F♯ Half-Diminished Chords
Half-diminished chords (minor 7 flat 5) combine a diminished triad with a minor 7th. They serve as the ii chord in minor key ii-V-i progressions, making them essential for jazz musicians. The sound is dark but more stable than fully diminished.
Compatible Scales & Modes
These scales contain all the notes of F♯m7♭5 and can be used for soloing, improvising, and writing melodies over this chord.
Playing F# half-diminished on Guitar
The F# half-diminished chord, spelled F♯, A, C, E, occupies a specific harmonic role that depends on the musical context. In the key of F# major and Gb major enharmonically, this chord can function as a primary harmony or as a passing color depending on where it appears in the progression. Understanding which scale degrees produce F#-rooted chords helps you predict chord progressions and improvise melodies that complement the harmony.
On guitar, F# half-diminished voicings benefit from second-fret barre positions derived from open E shapes. The physical shape of this chord on the fretboard determines its tonal character — the same notes arranged in different voicings produce noticeably different sounds due to string gauge, fret position, and overtone content. Experiment with playing F# half-diminished in multiple positions to find the voicing that best fits the register and texture of the music you are working on.
F#m7b5, also called F# half-diminished, is built by adding a minor seventh to a diminished triad. This chord naturally occurs on the seventh degree of major keys and the second degree of minor keys, making it essential for minor key ii-V-i progressions in jazz.
When practicing F# half-diminished, use the compatible scales listed above to improvise melodies and riffs. Start by playing the chord, then explore the scale tones one at a time to hear how each note sounds against the harmony. This ear training exercise connects your theoretical knowledge of F#-rooted chords to practical musicianship skills that improve your playing across all genres and styles.