Practice the B 9 Chord with Real-Time Feedback
B9 (B dominant ninth) uses five notes: B, D#, F#, A and C#. That is a B major triad with a flat seventh (A) and a ninth (C#) added above it.
Look at the listed shapes and you will see three voicings, neither open nor barred, whose lowest fret is the 1st. The theory behind the stacking is covered in how chords are built. The B Mixolydian scale contains every B9 chord note.
The player at the top labels every note, so you can tell the ninth from the root at a glance.
B dominant 9th guitar chord is also written as B9, Bdom9, B7(9) or B7add9.
Notes that compose the B 9 chord:
How to create the Dominant Ninth chord:
Formula: 1 3 5 b7 9
B 9 Chord Interactive Fretboard
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B 9 Guitar Chord Diagrams
Position 1 Movable
Finger Positions
- Mute the low E string
- Mute the high E string
- Place your index finger (1) on the fret 1 of the D string
- Place your middle finger (2) on the fret 2 of the A string
- Place your ring finger (3) on the fret 2 of the G string
- Place your pinky finger (4) on the fret 2 of the B string
Position 2 Movable
Finger Positions
- Mute the low E string
- Mute the high E string
- Place your index finger (1) on the fret 6 of the A string
- Place your middle finger (2) on the fret 6 of the G string
- Place your ring finger (3) on the fret 7 of the D string
- Place your pinky finger (4) on the fret 7 of the B string
Position 3 Movable
Finger Positions
- Mute the low E string
- Mute the A string
- Place your index finger (1) on the fret 6 of the G string
- Place your middle finger (2) on the fret 7 of the D string
- Place your ring finger (3) on the fret 7 of the B string
- Place your pinky finger (4) on the fret 7 of the high E string
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FAQ
Which notes make up B dominant ninth?
B9 is B, D#, F#, A and C#. The A is the minor seventh and the C# is the major ninth over the root.
What does B9 add to B7?
B7 is B, D#, F# and A. B9 adds C#, a major ninth over the root, which gives the chord a wider sound.
How many voicings does B9 have?
There are 3 voicings, from fret 1 to fret 7. None of them uses an open string and none is a barre voicing.
Which scale suits B9?
B Mixolydian spells B, C#, D#, E, F#, G# and A. All five chord notes are in it, with C# as the ninth.
What interval is the A in B dominant ninth?
The A is a minor seventh over B, one whole step under the upper B. It is the note that makes the chord dominant instead of major.