How do you play the B dim7/F## chord?

To play the B dim7/F## chord on piano, play the B dim7 chord (B, D, F and Ab) with F## as the lowest bass note. Place the F## note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What is a slash chord?

A slash chord (or compound chord) is written as Chord/Bass and specifies both a chord and a bass note. The note to the right of the slash is played as the lowest note. The B dim7/F## chord means a B dim7 chord with F## in the bass.

B dim7/F##

Q: What notes are in the B dim7/F## chord?

The B dim7/F## chord uses the 4 notes of the B dim7 chord — B (Perfect unison), D (Minor third), F (Diminished fifth) and Ab (Major sixth) — with F## played as the bass note in the lowest register.

The B dim7 chord consists of the B (Perfect unison), D (Minor third), F (Diminished fifth) and Ab (Major sixth) notes, with F## as the bass note.

Piano keyboard showing the notes for a B dim7/F## chord

How to play the B dim7/F## chord

Play F## as the lowest bass note in the left hand
Find B (Root) on the piano keyboard
Add D (Minor third) — 3 semitones above B
Add F (Diminished fifth) — 6 semitones above B
Add Ab (Major sixth) — 9 semitones above B
Press all 5 notes simultaneously to sound the B dim7/F## chord

Inversions with same root

G 7(b9)

Related slash chords

D dim7/G
F dim7/G
G# dim7/F##