Bb9 chord

Bb9 chord for guitar with diagrams, fingerings and notes.

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Description and theory

The Bb9 is a dominant chord and equivalent to A sharp 9th. It consists of five notes, though depending on the instrument, some notes may be doubled or tripled. It's usually played in one of the movable shapes depending on the most fitting position on the fretboard, and less often played as an open chord.

Chord structure

The chord consists of five notes. The notes represent the root, the third, the perfect fifth, the minor seventh and raised ninth intervals. Notice that the third or the fifth is sometimes omitted.

Chord name

Bb9 is an abbreviation for B flat dominant ninth. A less common abbreviation is Bbdom9.

Notes

The notes that the Bb9 chord consists of are Bb, D, F, Ab and C.

Inversions

1st inversion: Bb9/D (means that D is the bass note).
2nd inversion: Bb9/F (means that F is the bass note).
3rd inversion: Bb9/Ab (means that Ab is the bass note).
4th inversion: Bb9/C (means that C is the bass note).

Omissions

Bb9(no3) is an B flat dominant 9th with no third (D).
Bb9(no5) is an B flat dominant 9th with no fifth (F).

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