Chord · Bb Major
B♭ Chord
B♭ is Bb, D and F — bright, stable. The reference triad.
B♭ on every instrument
The same 3 notes, 6 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.
What B♭ is made of
Bb Major (Bb major) is built from the notes Bb, D, F, with the interval pattern 1, 3, 5. A common major chord across many styles.
Stack 1, 3 and 5 on a root of B♭ and you get Bb, D and F. That interval recipe is what makes the chord a major chord — move the same shape to another root and the character travels with it, which is why C sounds like a transposed B♭.
Major: Bright, stable. The reference triad.
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♭
All 3 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 Bb
- What notes are in the Bb chord?
- Bb is made of Bb, D and F — the 1, 3 and 5 degrees of a major chord built on Bb.
- What keys use the Bb chord?
- Every note of Bb 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 Bb on guitar and piano?
- This page shows Bb on guitar, piano, ukulele, bass, mandolin and banjo — 12 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
- Is Bb the same as A#?
- Yes. Bb and A# are enharmonic — identical pitches written two different ways. Which spelling you use depends on the key you are in; Bb is the spelling this site treats as canonical.
Learn the theory behind it
Why B♭ behaves the way it does — the guides that explain the chord instead of just spelling it.