Chord · Bb 6/9
B♭6/9 Chord
B♭6/9 is Bb, D, F, G and C — lush, neutral substitute for major triads.
B♭6/9 on every instrument
The same 5 notes, 2 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.
What B♭6/9 is made of
Bb 6/9 (Bb 6/9) is built from the notes Bb, D, F, G, C, with the interval pattern 1, 3, 5, 6, 9. A common 6/9 chord across many styles.
Stack 1, 3, 5, 6 and 9 on a root of B♭ and you get Bb, D, F, G and C. That interval recipe is what makes the chord a six nine chord — move the same shape to another root and the character travels with it, which is why C6/9 sounds like a transposed B♭6/9.
6/9: Lush, neutral substitute for major triads.
Spelling: the notes above are written the way a score would write them, not simplified to the nearest piano key. That is why this chord is spelled with B♭ rather than its enharmonic equivalent.
Keys that contain B♭6/9
All 5 notes sit inside the scale of 6 keys. The roman numeral marks the degree the chord is rooted on.
Other chords on B♭
Same root, different colour.
Questions people ask about Bb6/9
- What notes are in the Bb6/9 chord?
- Bb6/9 is made of Bb, D, F, G and C — the 1, 3, 5, 6 and 9 degrees of a six nine chord built on Bb.
- What keys use the Bb6/9 chord?
- Every note of Bb6/9 belongs to 6 keys: F Major (IV), Bb Major (I), Eb Major (V), D Minor (VI), G Minor (III), C Minor (VII). The roman numeral is the scale degree the chord is rooted on.
- How do you play Bb6/9 on guitar and piano?
- This page shows Bb6/9 on guitar and piano — 5 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
- Is Bb6/9 the same as A#6/9?
- Yes. Bb6/9 and A#6/9 are enharmonic — identical pitches written two different ways. Which spelling you use depends on the key you are in; Bb6/9 is the spelling this site treats as canonical.
Learn the theory behind it
Why B♭6/9 behaves the way it does — the guides that explain the chord instead of just spelling it.