Dominant Seventh Sharp Ninth Chord (7#9) - Diagrams and Voicings For Guitar

What's a 7#9 chord?

A 7#9 chord is a dominant 7th chord (1 - 3 - 5 - b7) with a ninth raised by a semitone (#9) giving the formula 1 - 3 - 5  - b7 - #9. 

How to build 7#9 chords?

You just have to add a ninth to the dominant 7 chord and raise it with a semitone to get a dominant 7#9 chord. As it is shown in the chart below, by adding a 9 to a dominant 7 chord you obtain a dom9 chord and by raising the ninth you get a 7#9 chord.

Dominant seventh chord 1 3 5 b7  
Dominant 9th chord 1 3 5 b7 9
Dominant 7#9 chord 1 3 5 b7 #9 (b3)


7#9 chords have a blues sound because of the major third and the minor third. Indeed, as you can see in the chart above, the #9 can be considered as the minor third (b3). This type of chord is often referred as the Hendrix (Jimmy) chord because of its use in Purple haze.

There is much of it in many jazz-blues compositions and very used by hard-bop musicians as Wes Montgomery (Four on six, Full House, D natural blues), Kenny Burrell (Chitlins con carne), Grant Green, Lou Donaldson and many more.

Notation Symbols

Dominant 7#9 chords can be written 7+9 or 7#9.

What Scale to Play Over 7#9 Chords?

Minor pentatonic scale, minor blues scale, diminished scales or altered scale are generally used to play over 7#9 chords.

Basic 7#9 Guitar Shapes

Here are three main positions to play dominant seventh sharp ninth chords on the guitar. As already mentioned before, 9th chords are theoretically made up of five tones, but it is physically difficult to play all of them. That's why the fifth (5) is generally omitted. It is the least important notes which make up the 7#9 chord.

Drop 2 Dominant 7#9 Chord Shapes - Rootless Voicings

Here are twelve dominant 7#9 chord shapes based on the four rootless Drop 2 voicings below.

Dominant 7#9 Root position #9 5 b7 3
1st inversion 3 b7 #9 5
2nd inversion 5 #9 3 b7
3rd inversion b7 3 5 #9
  • 40 Minor II V I Licks

    This guitar method is a printable PDF with tabs, diagrams, theory and audio files providing 40 minor II V I jazz licks.
  • 40 II V I Jazz Guitar Licks

    This pdf method for guitar contains 40 II V I jazz guitar lines with tab, standard notation, analysis, scale charts and audio files.
  • 50 II-V-I voicings

    This guitar method is a printable PDF eBook contains 50 exercises with audio files, analysis, tab & standard notation on how to play over II-V-I chord progressions using different kind of voicings.
  • II V I Bundle

    This package contains 3 PDF methods for jazz guitarists with tabs, audio files, analysis about the II V I progression.
  • 40 Mixolydian Jazz Guitar Lick

    This package contains a guitar method available as a PDF with tabs, audio files and theory providing 40 dominant jazz guitar lines for teachers and students.
  • 40 Minor Jazz Guitar Licks

    This printable guitar method in PDF format contains 40 easy minor jazz guitar lines based on the Dorian mode.
  • 40 Major Jazz Guitar Licks

    Printable PDF eBook method containing 40 major jazz guitar licks with tab, standard notation and audio files for beginners and intermediates.
  • Diatonic Licks Bundle

    This package contains 120 jazz guitar lines based on diatonic modes as Mixolydian, Dorian and Ionian. PDF format with tabs, audio files and analysis.
  • Guitar Walking Bass Lines NEW

    This jazz guitar method about walking bass lines and chords is available as a PDF files containing 35 exercises with tabs, analysis and audio files
  • 101 Dominant Arpeggio Patterns

    This printable PDF method provides 101 dominant arpeggio exercises with tab, theory and standard notation for the jazz, blues and rock guitarist.
  • 49 Essential Jazz Lines

    This printable eBook method in PDF format provides 49 jazz solo transcriptions of the greatest jazz musicians of all times with TABS, standard notation, audio files and analysis both for guitar teachers and students.
  • 11 Jazz Blues Studies

    This PDF method contains 11 guitar lessons with chord studies, tabs, standard notation, analysis & audio files about the main blues progressions used in jazz music.
  • 25 Altered Jazz Guitar Lines

    This PDF eBook method contains 25 altered jazz guitar licks with tabs, patterns, scale charts and audio files to master, apply and develop the altered scale.
  • 40 Blues Dominant patterns

    This printable method is available as a PDF file containing 40 easy dominant jazz-blues guitar lines with tabs, standard notation, analysis, audio files and scale charts.
  • Mastering Pentatonic Scales

    This jazz guitar method is an eBook available as a PDF with standard notation, guitar tabs, diagrams, analysis, audio files and backing tracks. You will find in this booklet 25 easy jazz guitar lines with theory using common and rare pentatonic scales.
  • 25 Soul Jazz Guitar Licks

    You will find here an eBook available in PDF containing 25 soul jazz and hard bop guitar licks in the style of Grant Green, Melvin Sparks, George Benson. These jazz lines come with tabs, standard notation, guitar neck diagrams, backing track for practice and 25 audio files for each riff.
  • 25 Diminished Patterns

    This eBook PDF with audio files contains 25 dominant diminished jazz guitar patterns using the half-whole diminished scale and diminished 7th arpeggios.
  • 6 Tritone substitution licks

    This Printable PDF eBook available for free download contains 6 easy jazz guitar licks with tabs/notation, youtube video link and analysis about the tritone substitution.

Last edited: 07/15/2019