Dominant #9 (Hendrix)

The Purple Haze sound

Prove it — just do the practice exercise.
E7#9 Root Position
E (R)Ab (3)B (5)D (♭7)G (♯9)
The 7#9 — also called the "Hendrix chord":

• R – 3 – 5 – ♭7 – #9

The #9 is enharmonically the same as the minor 3rd. Major 3rd + #9 together = maximum friction.

Example: E7#9 = E + G# + B + D + G