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B9 chord

B dominant 9th

C4
B
C5
D#
F#
A
C6
C#

Want it in context? Open B9 on the full piano.

Notes

  • B
    R
  • D#
    3
  • F#
    5
  • A
    b7
  • C#
    9

Formula: R – 3 – 5 – b7 – 9

B9 inversions

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

Root position B9

C4
B
C5
D#
F#
A

1st inversion B9/D#

C5
D#
F#
A
B
C6

2nd inversion B9/F#

C5
F#
A
B
C6
D#

3rd inversion B9/A

C5
A
B
C6
D#
F#

More B chords

Dominant 9th chords in other keys

FAQ

What notes are in the B9 chord?

The B dominant 9th chord (B9) has 5 notes: B, D#, F#, A and C#.

How do you play B9 on the piano?

Put your right hand on B, D#, F#, A and C#, 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 dominant 9th chord?

R – 3 – 5 – b7 – 9 (in semitones from the root: 0, 4, 7, 10, 14).