A9(#5) Guitar Chord | Play, Hear and Practice Interactively

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The A 9(#5) chord, a complex member of the Augmented Chords family, is constructed from the notes A, C#, E#, G, and B, representing the intervals 1 (Root), 3 (Major Third), #5 (Augmented Fifth), b7 (Minor Seventh), and 9 (Major Ninth). Unlock its full potential using the interactive fretboard tool at the top of the page, where you can visualize every fingering, listen to the chord as a strum or arpeggio, and receive instant feedback on your playing with real-time microphone detection.

This advanced chord adds a sophisticated, jazz-like tension to your progressions. Understanding the intervals that compose it is crucial for mastering such complex voicings. Dive deeper into its theoretical foundations with our Chord Construction guide, or explore its role within the larger Ninth Chords and Dominant Chord families. Once you've got the fingering down, focus on developing smooth chord changes to integrate the A 9(#5) seamlessly into your playing.

Below, you'll discover a comprehensive collection of A 9(#5) chord diagrams, ordered from the simplest open positions to more challenging movable shapes, alongside in-depth music theory explanations, popular songs featuring this chord, and a guide to the keys where it shines. Before you scroll down, take a moment to engage with the interactive tool above. Use the drum and BPM tool to set your tempo, try out the chord, and let the mic feedback guide you to perfect finger placement. This hands-on approach is the most effective way to internalize new chords like the A 9(#5).

Notes that compose the A 9(#5) chord:

A C# E# G B

Chord structure of the Dominant Ninth Sharp Fifth chord:

#11

A9(#5) Guitar Chord Voicings

Position 1
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 A9(#5) chord page, with written diagram instructions and screen-reader support for blind users.

Play This Chord With Other Roots

C 9(#5) | D 9(#5) | E 9(#5) | F 9(#5) | G 9(#5) | A 9(#5) | B 9(#5) | C#9(#5) | D#9(#5) | F#9(#5) | G#9(#5) | A#9(#5) | Ab9(#5) | Bb9(#5) | Db9(#5) | Eb9(#5) | Gb9(#5)

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FAQ

What notes make up the A 9(#5) chord?

The A 9(#5) chord is composed of five distinct notes: A, C#, E#, G, and B. These notes are derived from the specific intervals that define this chord.

What are the specific intervals that define the A 9(#5) chord?

The A 9(#5) chord is built upon a specific stack of intervals: the 1 (Root), 3 (Major Third), #5 (Augmented Fifth), b7 (Minor Seventh), and 9 (Major Ninth). Understanding these intervals helps you grasp the chord's unique sound and construction.

How does the A 9(#5) chord fit into the 'Augmented Chords family'?

The A 9(#5) chord is part of the Augmented Chords family because it contains an Augmented Fifth (#5) interval. This specific interval, in this case E#, is what gives the chord its 'augmented' quality, providing a distinct, tension-filled sound.

Why is the A 9(#5) chord considered complex and not for beginner guitarists?

This chord is considered complex because it involves five notes and incorporates an altered interval (the augmented fifth), requiring a deeper understanding of music theory and fretboard knowledge than basic chords. Its sophisticated sound is typically found in more advanced harmonic contexts, particularly in genres like jazz.

When is the A 9(#5) chord typically used in music?

The A 9(#5) chord is particularly popular in jazz music. It's used to add a sophisticated touch and harmonic color to chord progressions, often creating tension that resolves to another chord. Its unique sound makes it an excellent choice for expanding your harmonic vocabulary.