ii–V–I
in E major
Piano chord
B Dominant 9th Piano Chord (B9)
The B Dominant 9th chord on piano is made of the notes B, D♯, F♯, A and C♯. Funky and jazzy. A dominant 7th with an added 9th.
Tap any key to hear it.
What notes are in B Dominant 9th?
5 notes, built 1 – 3 – 5 – ♭7 – 9 up from B.
- Notes
- B – D♯ – F♯ – A – C♯
- Formula
- 1 – 3 – 5 – ♭7 – 9
- Semitones from the root
- 0 – 4 – 7 – 10 – 14
- Symbol
- B9
- Chord type
- Dominant 9th, 5 notes
How to play B Dominant 9th on piano
B Dominant 9th spans more than an octave, so it is usually split between the hands.
- Left hand: B and F♯ (fingers 5 and 1).
- Right hand: D♯, A, C♯ (fingers 1, 3 and 5).
B Dominant 9th inversions
Each inversion puts a different note of the chord in the bass. Written as a slash chord: B9/D♯, B9/F♯, B9/A.
Can you find B Dominant 9th?
Tap the notes on the keyboard, then check. Six chords, starting with this one.
1 / 6 Tap the notes of B Dominant 9th (B9)
Score 0
Any octave, any order. Each key you tap plays.
What key is B Dominant 9th in?
The keys whose scale contains every note of B9, with the chord’s Roman numeral in each.
Major keys
- E majorV9
Minor keys
- E minorV9 (harmonic minor)
- C♯ minorVII9
B Dominant 9th chord FAQ
What notes are in the B Dominant 9th chord?
B Dominant 9th (B9) has 5 notes: B, D♯, F♯, A and C♯. Its formula is 1 – 3 – 5 – ♭7 – 9, counted up from B.
How do you play B Dominant 9th on the piano?
Spread it over two hands: the left hand plays B and F♯ (fingers 5 and 1), the right hand plays D♯, A, C♯ (fingers 1, 3 and 5).
What are the inversions of B Dominant 9th?
1st inversion: D♯, F♯, A, B, C♯ (B9/D♯). 2nd inversion: F♯, A, B, C♯, D♯ (B9/F♯). 3rd inversion: A, B, C♯, D♯, F♯ (B9/A).
What key is B Dominant 9th in?
B9 belongs to E major (V9) and C♯ minor (VII9).