F#9 chord (F sharp dominant ninth) on piano
F#9 (F sharp dominant ninth) has five notes: F sharp, A sharp, C sharp, E and G sharp. Its formula is 1, 3, 5, b7, 9. In major keys, F#9 is the V9 chord in B major.
F#9 inversions and fingering
F# A# E · LH 5-3-1
F# E A# C# G# · RH 1-2-5 · LH 5-1
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| Symbol | F#9 |
|---|---|
| Also written | F#dom9 |
| Notes | F# A# C# E G# |
| Formula | 1 3 5 b7 9 |
| Intervals | root, major third, perfect fifth, minor seventh, major second |
| Type | Dominant ninth chord |
F#9 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C#3 (5), E3 (flat 7), F#3 (1), G#3 (9), A#3 (3), C#4 (5), E4 (flat 7), F#4 (1), G#4 (9), A#4 (3).
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Questions
What notes are in the F#9 chord?
F#9 (F sharp dominant ninth) has five notes: F sharp, A sharp, C sharp, E and G sharp. Its formula is 1, 3, 5, b7, 9. F# is the root, A# is the major third, C# is the perfect fifth, E is the minor seventh and G# is the major second.
How do you play F#9 on piano?
Play F#, A#, C#, E and G# together. Shell (left hand): F# A# E · LH 5-3-1.
What key is F#9 in?
In major keys, F#9 is the V9 chord in B major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between F#9 and F#7?
F#9 is F#7 (F#, A#, C# and E) with G#, the 9th, added.