Understand and Play the C 9#5 Chord on Guitar
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The C 9(#5) chord is constructed from the Root, Major Third, Augmented Fifth, Minor Seventh, and Major Ninth intervals (1, 3, #5, b7, 9). This unique combination of notes-C, E, G#, Bb, and D-places it firmly within the Augmented Chords family, offering a distinctive, tension-filled sound. To truly grasp its composition and apply it to your playing, utilize our interactive virtual fretboard to visualize these intervals across the strings. Practice alongside chord and arpeggio playback, and verify your accuracy in real-time using our mic feedback feature.
Ninth chords, like the C 9(#5), expand on the foundational Dominant Chord structure by adding an additional color tone, the ninth. This extension creates richer harmonies and more complex voicings, central to styles such as jazz and fusion. Understanding the logic behind these extended harmonies is crucial, and you can deepen your knowledge of how notes combine to form complex structures by exploring our Chord Construction guide and delving into the specifics of Ninth Chords. Disciplined practice of these concepts is key to integrating them effectively.
Before attempting to memorize various C 9(#5) diagrams (which are ranked from easiest to hardest), we encourage you to spend time with our interactive tool. This approach allows you to internalize the chord's theory and sound before tackling specific shapes. Master this chord across all keys, apply its unique tension to your songs, and develop a disciplined practice routine to ensure lasting improvement and musical versatility.
Notes of the C 9(#5) chord:
How the Dominant Ninth Sharp Fifth chord is built:
C9(#5) Guitar Chord Shapes
Position 1
Movable
Position 2
Barre
Movable
Find more shapes in our all guitar chords online library. If you
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You can also use this accessible C9(#5) chord page, with written diagram instructions and screen-reader support for blind users.
FAQ
What notes and intervals make up the C 9(#5) chord?
The C 9(#5) chord is composed of the notes C, E, G#, Bb, and D. These notes correspond to the intervals of the Root (C), Major Third (E), Augmented Fifth (G#), Minor Seventh (Bb), and Major Ninth (D).
Why is the C 9(#5) chord considered part of the 'Augmented Chords' family?
The C 9(#5) chord belongs to the Augmented Chords family because it features an Augmented Fifth interval (G# in this case). The 'augmented' quality specifically refers to this raised fifth.
How does the C 9(#5) chord differ from a regular C9 chord?
The key difference lies in the fifth interval. A C 9(#5) chord explicitly includes an Augmented Fifth (G#), creating a distinct, tension-filled sound. A regular C9 chord, by contrast, would typically use a Perfect Fifth (G).
When might I use the C 9(#5) chord in a musical context?
The C 9(#5) is a colorful and advanced chord often used in jazz chord progressions. Its unique sound adds harmonic tension and can be used to create interesting voice leading and movement within a song.
Is the C 9(#5) chord considered difficult for guitarists to learn?
Yes, the C 9(#5) chord is described as an advanced chord. It requires a solid understanding of fretboard intervals and chord construction. Guitarists new to complex voicings might find it challenging and are encouraged to master simpler chords first.