F#m7b5 chord (F sharp half-diminished seventh) on piano
F#m7b5 (F sharp half-diminished seventh) has four notes: F sharp, A, C and E. Its formula is 1, b3, b5, b7. In major keys, F#m7b5 is the viiø7 chord in G major.
F#m7b5 inversions and fingering
F# A C E · RH 1-2-3-5 · LH 5-3-2-1
A C E F# · RH 1-2-4-5 · LH 5-3-2-1
C E F# A · RH 1-2-3-5 · LH 5-3-2-1
E F# A C · RH 1-2-3-5 · LH 5-4-2-1
F# A E · LH 5-3-1
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| Symbol | F#m7b5 |
|---|---|
| Also written | F#ø, F#ø7, F#min7b5, F#-7b5 |
| Notes | F# A C E |
| Formula | 1 b3 b5 b7 |
| Intervals | root, minor third, tritone, minor seventh |
| Type | Half-diminished seventh chord |
F#m7b5 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C3 (flat 5), E3 (flat 7), F#3 (1), A3 (flat 3), C4 (flat 5), E4 (flat 7), F#4 (1), A4 (flat 3), C5 (flat 5).
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Questions
What notes are in the F#m7b5 chord?
F#m7b5 (F sharp half-diminished seventh) has four notes: F sharp, A, C and E. Its formula is 1, b3, b5, b7. F# is the root, A is the minor third, C is the tritone and E is the minor seventh.
How do you play F#m7b5 on piano?
Play F#, A, C and E together. Root position: F# A C E · RH 1-2-3-5 · LH 5-3-2-1.
What key is F#m7b5 in?
In major keys, F#m7b5 is the viiø7 chord in G major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between F#m7b5 and F#dim7?
F#m7b5 and F#dim7 share F#, A and C. F#m7b5 has E, the flat 7th, where F#dim7 has Eb, the double flat 7th.