Dominant seventh sharp ninth chord
| Component intervals from root | |
|---|---|
| sharp ninth | |
| flat seventh | |
| perfect fifth | |
| major third | |
| root | |
| Tuning | |
| 5-32 or 5-limit JI 160:200:240:288:375 | |
|
Forte no. / |
|
| 5-32 / |
In music, the dominant 7♯9 chord ("dominant seven sharp nine" or "dominant seven sharp ninth") is a chord built by combining a dominant seventh with an augmented second. This chord is used in many forms of contemporary popular music, including jazz, funk, R&B, hip hop,rock and pop. As a dominant chord in diatonic harmony, it most commonly functions as a turnaround chord, returning to the tonic. However, the 7♯9 is also frequently used in some styles as a tonic without the resolution typical of a dominant chord.
The chord is also sometimes colloquially known, among pop and rock guitarists, as the Hendrix chord or Purple Haze chord, nicknamed for guitarist Jimi Hendrix, who showed a preference for the chord and did a great deal to popularize its use in mainstream rock music. When used by The Beatles it has also been called the Gretty chord although this can refer to a distinct 6 string version.
There are two main ways to spell the chord, depending on the musical style, kind of musical notation (score or chord symbols), and personal taste. One consists of a dominant seventh chord with an added minor third placed one or more octaves over the major third (a minor tenth); the other, more common, consists of a dominant seventh chord with an added augmented ninth. The former can be written in popular chord symbol notation systems as 7♭10 and the latter as 7♯9.
...
Wikipedia