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Bdim7 chord

B diminished 7th

C4
B
C5
D
F
Ab

Want it in context? Open Bdim7 on the full piano.

Notes

  • B
    R
  • D
    b3
  • F
    b5
  • Ab
    6

Formula: R – b3 – b5 – 6

Bdim7 inversions

The same notes, with a different note in the bass.

Root position Bdim7

C4
B
C5
D
F
Ab

1st inversion Bdim7/D

C5
D
F
Ab
B
C6

2nd inversion Bdim7/F

C5
F
Ab
B
C6
D

3rd inversion Bdim7/Ab

C5
Ab
B
C6
D
F

FAQ

What notes are in the Bdim7 chord?

The B diminished 7th chord (Bdim7) has 4 notes: B, D, F and Ab.

How do you play Bdim7 on the piano?

Put your right hand on B, D, F and Ab, starting from B. A common fingering for three-note chords is thumb (1), middle finger (3) and little finger (5).

What is the formula of a diminished 7th chord?

R – b3 – b5 – 6 (in semitones from the root: 0, 3, 6, 9).