Mandolin · ninth
F♯9 Chord on Mandolin
F# Dominant 9th is F#, A#, C#, E, G# — the 1-3-5-b7-9 pattern of a ninth chord. Here is the shape, the audio, and what usually goes wrong.
There is no open F#9 on mandolin — the single shape below is a barre, which is exactly why this chord trips people up. Take it slowly and check every string.
Start here — Movable 9th Shape (1st fret)
Barre at fret 1 — harder to hold than an open shape, but movable: slide it and you have every other ninth chord.
What beginners get wrong
Moving in and out of it
The shape above: Movable 9th Shape (1st fret) — barred at fret 1.
Listening: each shape above has its own play button, and each one plays the notes that shape actually produces — not a generic triad.
F#9 on other instruments
Same notes, different hands. Every link below is a real page with diagrams and audio.
Chords next door
Same root, different colour — and all of them playable on mandolin.
F#9 on Mandolin — questions people ask
What is the easiest way to play F#9 on mandolin?
“Movable 9th Shape (1st fret)” — which we rate advanced — is the easiest F#9 shape on mandolin. Barre at fret 1 — harder to hold than an open shape, but movable: slide it and you have every other ninth chord. There is no open F#9 on mandolin, so a barre is unavoidable; this is the least demanding one.
What notes are in the F# Dominant 9th chord?
F# Dominant 9th is F#, A#, C#, E, G# — the 1-3-5-b7-9 interval pattern of a ninth chord. Every voicing on this page uses those notes and nothing else; they just appear in a different order and octave.
What can I play instead of F#9?
The nearest stand-ins on mandolin that keep the same root are F#sus4, F#sus2, F#. They keep the root and the fifth and only change what sits in the middle, so most songs still work — but check the swap against the melody, because the note you removed may be the one the tune is singing.
Can I play F#9 on other instruments?
Yes. F#9 is the same set of notes everywhere; only the fingering changes. This site has diagrams and audio for it on guitar, piano, ukulele.
Learn the theory behind F#9
The shape gets your fingers there. These explain why it sounds the way it does.
Barre Chords — The Wall Every Guitarist Climbs
This one asks for a barre. The article is the fix for the buzzing and the aching hand.
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The 12-Bar Blues — Three Chords, A Century of Hits
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