Bbmaj9 chord

B-flat major ninth, also written A#maj9. One shape on the neck below, with the notes it's built from and the keys it belongs to.

Notes

  • Bb
    1
  • D
    3
  • F
    5
  • A
    7
  • C
    9

The major third is what makes it sound bright and settled.

The major seventh sits a half step below the root, which gives it that soft, jazzy sound.

The 9th adds color on top without changing whether it's major or minor.

How to play Bbmaj9

Founding players

Want to know why this chord works where it does? The Intermediate lessons cover it, and founding players get them first.

One email to confirm, then an occasional note when lessons ship.

Keys with Bbmaj9

Bbmaj9 uses only notes from Bb major, F major, G minor and D minor. It sounds most at home in Bb major.