Banjo · diminished seventh
F♯dim7 Chord on Banjo
F# Diminished 7th is F#, A, C, Eb — the 1-b3-b5-bb7 pattern of a diminished seventh chord. Here is the shape, the audio, and what usually goes wrong.
There is no open F#dim7 on banjo — 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 Dim7 Shape (7th fret)
Barre at fret 7 — the same movable idea, further up the neck: brighter, more compact, and easier to reach if you are already playing up there.
What beginners get wrong
Moving in and out of it
The shape above: Movable Dim7 Shape (7th fret) — barred at fret 7.
Listening: each shape above has its own play button, and each one plays the notes that shape actually produces — not a generic triad.
F#dim7 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 banjo.
F#dim7 on Banjo — questions people ask
What is the easiest way to play F#dim7 on banjo?
“Movable Dim7 Shape (7th fret)” — which we rate advanced — is the easiest F#dim7 shape on banjo. Barre at fret 7 — the same movable idea, further up the neck: brighter, more compact, and easier to reach if you are already playing up there. There is no open F#dim7 on banjo, so a barre is unavoidable; this is the least demanding one.
What notes are in the F# Diminished 7th chord?
F# Diminished 7th is F#, A, C, Eb — the 1-b3-b5-bb7 interval pattern of a diminished seventh 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#dim7?
The nearest stand-ins on banjo 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#dim7 on other instruments?
Yes. F#dim7 is the same set of notes everywhere; only the fingering changes. This site has diagrams and audio for it on guitar, piano, ukulele, bass, mandolin.
Learn the theory behind F#dim7
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.
7 min read
Functional Harmony: Three Roles, One Engine
Diminished chords are almost always doing a job. This explains which one.
6 min read
Cadences — The Four Ways a Phrase Ends
Where all that tension goes — how the chord resolves into the next one.
4 min read