Learn › Bbadd9 Chord on Piano (B Flat Add 9)
New Released in April 2026
Bbadd9 Chord on Piano (B Flat Add 9)
The B flat add 9 chord (Bbadd9) uses the piano keys Bb, D, F and C: the major triad Bb plus the 9th, C, with no seventh in between. In one phrase: wide and shiny, a major chord with a ring on top.
No account, no download. The demo has limited content. Advanced features are in ChordRunner Premium.
- MIDI keyboard
- Digital or acoustic piano
- Guitar
- Computer, phone or tablet
Bbadd9 and Bbsus2
Take Bbsus2 (Bb C F) and add the third D: you have Bbadd9. That is why Bbadd9 still sounds major, while Bbsus2 does not.
How Bbadd9 is built
Every chord is a recipe of scale steps. For Bbadd9 the recipe is 1 3 5 9, counted from Bb.
Start chord: Bb
| Note | Step | Interval | Keys from Bb |
|---|---|---|---|
| Bb | 1 | root | 0 |
| D | 3 | major 3rd | 4 |
| F | 5 | perfect 5th | 7 |
| C | 9 | major 9th | 14 |
Bbadd9 in every position
Same notes, different order. Pick the position closest to the chord you just played.
Root position: Bb C D F
1st inversion: D F Bb C
2nd inversion: F Bb C D
Which fingers
| Right hand | Bb C D F | 1 2 3 5 |
|---|---|---|
| Left hand | Bb C D F | 5 4 3 1 |
Make Bbadd9 automatic
- Say the notes out loud while you press them: Bb, D, F and C.
- Play Bb, then Bbadd9, then Bb again, and hear what the 9th adds on top.
- Try Bbadd9 in 1st inversion, the position that sits closest to your last chord.
- Last, meet Bbadd9 mixed with chords you already know, in an order you did not plan.
Come back to Bbadd9 tomorrow: short daily sessions beat one long one.
Keys and moves for Bbadd9
- Bbadd9 fits wherever Bb fits: Bb major, F major and Eb major.
- Pop and worship songs use it in place of plain Bb to make a simple progression sound fuller.
Train Bbadd9 with ChordRunner
In ChordRunner every correct chord moves your runner forward. Plug in a MIDI keyboard or let the microphone listen to your piano. Add9 chords come in the level "Sixth & Add Chords".
Play the demoCommon questions
What is Bbadd9 on the piano?
Bbadd9 is the B flat add 9 chord: Bb, D, F and C, the major triad Bb plus the 9th, C, with no seventh in between.
Is Bbadd9 the same as Bbsus2?
No. Bbsus2 has no third, Bbadd9 adds D, and that one note makes Bbadd9 sound major.
Where is Bbadd9 used?
Bbadd9 fits wherever Bb fits: Bb major, F major and Eb major. Pop and worship songs use it in place of plain Bb to make a simple progression sound fuller.
Can I practise Bbadd9 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 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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