F♯dim 7-string bass chord

How to play F♯dim on 7-string bass

The most common way, the first shape above: your index finger on the D string at the 4th fret and your middle finger on the F string at the 4th fret. Let the C string ring open. Don’t play the B, E, A and G strings.

From the B string x x x 4 x 0 4 (x: not played, 0: open)

What notes are in F♯dim?

F♯dim, F♯ diminished, is F♯, A and C: the root (F♯), the minor third (A) and the diminished fifth (C). Its formula is 1 ♭3 ♭5.

What is the difference between F♯dim, F♯m7♭5 and F♯dim7?

F♯dim is three notes, F♯, A and C. F♯m7♭5 adds the minor seventh, E; F♯dim7 adds the diminished seventh, E♭, a half step lower.

Where does F♯dim go?

Most often up a half step, to G: it is the chord on the seventh note of a major key, leading back to the tonic.

Keys with F♯dim

F♯dim is the vii° chord in G major and the ii° chord in E minor.