Dominant seventh sharp ninth chord

A dominant seventh sharp ninth chord, also known as the Hendrix chord, is composed using a root/1^st, major 3^rd, perfect 5^th, minor 7^th and an augmented 9^th (or R/1-3-5-♭7-♯9) intervals played simultaneously. Generally written as C^7(♯9), C7⁺⁹ or C^-7+9, it is good practice to simply use an uppercase C followed by a super scripted ^7(♯9) to represent it in writing (ie: C^7(♯9))

Dominant seventh sharp ninth chord profile

Intervals	root/1^st, major 3^rd, perfect 5^th, minor 7^th, augmented 9^th or R/1-3-5-♭7-♯9
Stability	Dissonant, unstable, unresolved
Grouping class	Pentad
Common names (examples in C)	C^7(♯9), C7⁽⁺⁹⁾, C^(-7+9), Hendrix Chord