A7b9 Guitar Chord | Play, Hear and Practice Interactively

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The A7(b9) chord, a rich member of the Dominant Chords family, is built from the notes A, C#, E, G, and Bb. These correspond to the intervals Root (1), Major Third (3), Perfect Fifth (5), Minor Seventh (b7), and Minor Ninth (b9). Unlock its complexities with the interactive fretboard tool at the top of this page. You can visualize every possible fingering, listen to the chord played as a strum or arpeggio, and check your own playing with the real-time microphone feedback to ensure perfect execution.

The A7(b9) creates a distinct jazz-infused tension, often used to lead to a minor chord a fifth below. To truly grasp its sound and function, explore its foundations in the Dominant Chord family and discover how it expands upon the simpler seventh chords. Delve deeper into its sophisticated construction with our guide on Ninth Chords, and for the fundamental principles of how any chord comes together, consult our Chord Construction tutorial. Once you master the fingering, focus on improving your chord changes for seamless playing.

As you scroll down, you'll discover a comprehensive collection of A7(b9) chord diagrams, carefully ranked from the easiest open positions to more challenging barre shapes. We'll also cover its music theory applications, showcase songs that feature this compelling chord, and list the keys where it commonly appears. But before you dive into the diagrams, take a moment to engage with the interactive tool above. Set a comfortable practice tempo with the built-in drum & BPM tool, strum the chord, and let the mic feedback guide your hand. This hands-on, immediate feedback loop is your quickest path to truly internalizing the A7(b9) chord.

Notes of the A 7(b9) chord:

A C# E G Bb

Chord Formula:

#11

A Dominant Seventh Flat Nine Added Guitar Chord Fingers Positions

Position 1
Open

Position 2
Movable

Position 3
Barre Movable

Find more shapes in our all guitar chords online library. If you prefer a printable pdf, download the Free Guitar Chords Chart Pdf

You can also use this accessible A7(b9) chord page, with written diagram instructions and screen-reader support for blind users.

Play This Chord With Other Roots

C 7(b9) | D 7(b9) | E 7(b9) | F 7(b9) | G 7(b9) | A 7(b9) | B 7(b9) | C#7(b9) | D#7(b9) | F#7(b9) | G#7(b9) | A#7(b9) | Ab7(b9) | Bb7(b9) | Db7(b9) | Eb7(b9) | Gb7(b9)

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FAQ

What notes make up the A7(b9) chord?

The A7(b9) chord is composed of five distinct notes: A, C#, E, G, and Bb. These notes create its unique and rich sound.

What do the numbers and symbols in A7(b9) refer to?

In A7(b9), 'A' is the root note. '7' indicates that it is a dominant seventh chord, meaning it includes the root, major third, perfect fifth, and minor seventh. The '(b9)' signifies the addition of a minor ninth interval to this dominant seventh structure.

What intervals are used to build the A7(b9) chord?

The A7(b9) chord is constructed using a specific set of intervals relative to the root note A: 1 (Root), 3 (Major Third), 5 (Perfect Fifth), b7 (Minor Seventh), and b9 (Minor Ninth).

Why is the A7(b9) chord considered a 'Dominant Chord'?

The A7(b9) is a member of the Dominant Chords family primarily because it includes a minor seventh (b7) interval. This interval creates a strong harmonic tension that naturally seeks to resolve to the tonic, giving it a dominant function.

When would a guitarist typically use an A7(b9) chord?

The A7(b9) is a complex and rich-sounding chord that adds depth and tension to music. It's a common and characteristic feature in jazz music, often used to create harmonic interest and prepare for resolutions.

Is the A7(b9) chord suitable for beginner guitarists?

No, the A7(b9) is considered a more advanced chord due to its extended intervals and complex voicing. Beginner guitarists are advised to first master fundamental chords and basic music theory before attempting chords like the A7(b9).