Fretwise Get the app

Guitar chord · Dominant 7♯9 (Hendrix chord)

C7#9 chord (C Dominant 7♯9 (Hendrix chord))

Iconic gritty rock/funk chord popularized by Jimi Hendrix in Purple Haze.

Notes CEGBbD#
Formula 1 3 5 ♭7 ♯9
Shapes 1 on this page

C7#9 chord shapes

Tap a diagram to strum it. Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. Blue dots are the root, C.

5th String Root (E7♯9 Shape) x 3 2 3 4 x

Interactive chord diagram

C7#9 on the fretboard

STR OP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 E A D G B E ✕ ✕

Tap any note to hear it.

Scales to play over C7#9

These scales start on C and contain every note of the chord, so they fit when C7#9 is the chord of the moment.

Fretwise · Free on iPhone & Android

Practise C7#9 and every other chord anywhere, even offline.

This page is a small slice of Fretwise. The app adds practice: exercises that play as tab, a new routine every day, and the tools to tune and keep time. On iPhone, iPad and Android, no sign-up.

Free

  • 65 scales and 56 chord types in every key, with CAGED shapes
  • A tuner with 10 tunings and a metronome from 30 to 260 BPM
  • A new Daily 15 routine every day, plus free exercises
  • Maqam & makam between the frets, and the Name the Note quiz

One purchase

  • 282 exercises that play as tab, and routines with a speed trainer
  • Chord & Scale Finder: tap the neck, get the name
  • Theory Lab and the Progression Builder with 51 genre loops
  • No subscription, ads removed

Questions

What notes are in a C7#9 chord?
C7#9 is C, E, G, Bb, D#: the 1, 3, 5, ♭7, ♯9 of C.
How do you play C7#9 on guitar?
5th String Root (E7♯9 Shape): x 3 2 3 4 x (low E to high E, x = don't play the string).
What scale goes with C7#9?
Scales on C that contain every note of C7#9: C Half-Whole Diminished, C Bebop Dorian, C Phrygian b4, C Lydian #2 #6, C Hungarian Major.

Dominant 7♯9 (Hendrix chord) chords in every key

More C chords