Learn › B7 Chord on Piano (B Dominant 7th)
New Released in April 2026
B7 Chord on Piano (B Dominant 7th)
B7, the B dominant 7th chord, stacks D#, F# and A on top of B. Four keys, formula 1 3 5 b7: the B triad plus A. Below: the four positions, fingering, a three-note voicing and where B7 goes next.
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- MIDI keyboard
- Digital or acoustic piano
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B7 in keys and progressions
- B7 is the V7 chord of E major and of E minor: it pulls into E / Em.
- In a ii-V-I in E major it is the middle chord: F#m7 → B7 → Emaj7.
- Between D# and A there is a tritone, the interval that creates the pull. F7 has the same two notes, so it can replace B7 (tritone substitution).
B7 inversions on the keyboard
In the 3rd inversion A is the lowest note: the seventh in the bass.
Root position: B D# F# A
1st inversion: D# F# A B
2nd inversion: F# A B D#
3rd inversion: A B D# F#
A 5-minute B7 routine
- Play B, D#, F#, A slowly in root position and say "B7" each time.
- Climb the four positions: B D# F# A, then D# F# A B, F# A B D# and A B D# F#, and back down.
- Loop F#m7 → B7 → Emaj7 until the change into and out of B7 is clean.
- Finally meet it in random order between other chords, with a check on every note.
Short daily rounds fix B7 in memory faster than one long practice a week.
B7 compared with the other 7th chords on B
Play the four in a row and listen to each colour.
How to play B7 on the piano
| Hand | B | D# | F# | A |
|---|---|---|---|---|
| Right hand | 1 (thumb) | 2 | 3 | 5 (little) |
| Left hand | 5 (little) | 3 | 2 | 1 (thumb) |
Too much stretch? Play B alone in the left hand and D# F# A in the right.
A three-note B7
The fifth (F#) adds little colour. B D# A is enough to sound like B7 and is far easier to reach.
Make B7 automatic
In ChordRunner B7 and every other chord ride towards your runner: play them in time. MIDI keyboard or microphone, both work.
Play the demoCommon questions
What is the difference between B7 and B?
B7 adds one note to the B triad: A, the minor seventh. That fourth note is what makes it a seventh chord.
What are the inversions of B7?
Root position B D# F# A, 1st inversion D# F# A B, 2nd inversion F# A B D# and 3rd inversion A B D# F#. Every position is still B7.
Where does B7 go?
B7 is the V7 chord of E major and of E minor: it pulls into E / Em. In a ii-V-I in E major it is the middle chord: F#m7 → B7 → Emaj7.
Can I practise B7 with a MIDI keyboard?
Yes. In ChordRunner a USB MIDI keyboard is detected automatically, and an acoustic piano works through the microphone. B7 counts in any inversion, as long as B, D#, F#, A sound together.
Your instrument is the controller.
ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.
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