B♭m9 / A♯m9 Chord on Guitar

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B♭m9 (also written A♯m9) is a minor ninth chord made of 5 notes: B♭, D♭, F, A♭, C. It sounds lush and smooth, and you hear it in neo-soul, R&B and jazz ballads. It is the i chord of B♭ minor and turns up in 5 other keys.

The library above opens on B♭m9 with 8 shapes up and down the neck. Tap a shape to hear it, or play it one string at a time.

Notes in B♭m9

NoteDegreeInterval from B♭Semitones
B♭1root0
D♭♭3minor third3
F5perfect fifth7
A♭♭7minor seventh10
C9major ninth14

Formula: 1 – ♭3 – 5 – ♭7 – 9. On guitar the 5th is often left out of the bigger shapes without changing the chord. With the other spelling, A♯m9 is A♯, C♯, E♯, G♯, B♯: the same sounds under different names.

How to play B♭m9

11fr21333
Fret 11Easyx(13)(11)(13)(13)(13)
4fr3142
Fret 4Easy6465xx
3fr314442
Fret 3Medium636664
6fr123
E-shape barre at fret 6Medium686668
6fr12223
Fret 6Medium6x6668
6fr2143
Fret 6Mediumxx8698

Fret 11 (root on the 5th string), step by step

  1. 1st finger (index): 4th string, 11th fret (D♭, the minor third).
  2. 2nd finger (middle): 5th string, 13th fret (B♭, the root).
  3. 3rd finger (ring): across the 3rd string and 2nd string and 1st string at the 13th fret (A♭, C, F).
  4. Strum from the 5th string, and keep the 6th string quiet.

Tips

The fret 11 shape is the one to learn first. Once it is easy, try the shape at the 6th fret (686668): the same chord, higher and brighter, handy when the chords before and after it sit up the neck.

Keys and progressions with B♭m9

B♭m9 belongs to 6 keys: vi in D♭ major, iii in F♯ major, ii in A♭ major, v in E♭ minor, iv in F minor, i in B♭ minor. In B♭ minor, try i–VI–III–VII: B♭m9 – G♭ – D♭ – A♭.

Common questions

What notes are in B♭m9?

B♭, D♭, F, A♭, C: the root, minor third, fifth, minor seventh, ninth.

What is the easiest way to play B♭m9?

Fret 11: x(13)(11)(13)(13)(13) (low string first), rated Easy.

What is the difference between B♭m9 and B♭m7?

B♭m9 has C. B♭m9 sounds lush and smooth; B♭m7 sounds soft and mellow, a minor chord with the edge taken off.

Is B♭m9 a hard chord?

No. The easiest shape is rated Easy and needs 3 fingers.

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