Learn › Bbmaj9 Chord on Piano (B Flat Major 9th)
New Released in April 2026
Bbmaj9 Chord on Piano (B Flat Major 9th)
To play the Bbmaj9 chord on the piano, press Bb, D, F, A and C. It is the major seventh Bbmaj7 plus the 9th, C. Expect a sound that is soft, dreamy and very open.
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- MIDI keyboard
- Digital or acoustic piano
- Guitar
- Computer, phone or tablet
Ways to place Bbmaj9 on the keys
Learn them in pairs: root position first, then the one that keeps the most notes still.
Both hands: Bb A D F C
Rootless, 3rd on the bottom: D F A C
Rootless, 7th on the bottom: A C D F
Left hand alone: Bb A
Fingering
| Left hand | Bb A | 5 1 |
|---|---|---|
| Right hand | D F C | 1 2 4 |
The chord hiding inside Bbmaj9
Look at the four top notes of Bbmaj9: D F A C. They form Dm7. So Bbmaj9 is Bb in the bass with Dm7 on top, an easy way to find it fast.
The formula of Bbmaj9
Start from Bbmaj7, which you may already know, and change one thing: add C above the major seventh.
Start chord: Bbmaj7
| Note | Step | Interval | Keys from Bb |
|---|---|---|---|
| Bb | 1 | root | 0 |
| D | 3 | major 3rd | 4 |
| F | 5 | perfect 5th | 7 |
| A | 7 | major 7th | 11 |
| C | 9 | major 9th | 14 |
A short Bbmaj9 routine
- Say the notes out loud while you press them: Bb, D, F, A and C.
- Play Bbmaj7, then Bbmaj9, then Bbmaj7 again, and hear what the 9th adds to the major seventh.
- Try Bbmaj9 in a rootless shape with the 3rd on the bottom, the position that sits closest to your last chord.
- Last, meet Bbmaj9 mixed with chords you already know, in an order you did not plan.
Five minutes a day is enough to make Bbmaj9 feel easy.
Where Bbmaj9 is used
- Bbmaj9 is the I chord of Bb major and the IV chord of F major.
- It replaces Bbmaj7 when a song wants a softer, wider sound.
Play Bbmaj9 in a game
ChordRunner shows a chord symbol and you play it on a MIDI keyboard, a real piano through the microphone or the on-screen keys. Major and minor 9ths have their own level, "Ninth Chords".
Play the demoCommon questions
How do you play Bbmaj9 on the piano?
Press Bb, D, F, A and C together. Left hand plays Bb A (fingers 5 and 1), right hand D F C (1, 2, 4).
Is Bbmaj9 the same as Dm7?
Not quite: Dm7 (D F A C) is only the upper part of Bbmaj9. Add Bb underneath and you have the full Bbmaj9.
Where is Bbmaj9 used?
Bbmaj9 is the I chord of Bb major and the IV chord of F major. It replaces Bbmaj7 when a song wants a softer, wider sound.
Can I practise Bbmaj9 with a MIDI keyboard or a real piano?
Yes. In ChordRunner a USB MIDI keyboard is detected automatically, and an acoustic or digital piano works through the microphone. The game checks that Bb, D, F, A and C 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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