page_title: Dominant seventh sharp ninth chord
section_title: Jazz and blues
hierarchical_section_title: Dominant seventh sharp ninth chord / History / Jazz and blues
caption_attribution_description: English: A domiant 7 #9 chord in a blues context.
context_page_description: In music, the dominant 7♯9 chord is a chord built by combining a dominant seventh, which includes a major third above the root, with an augmented second, which is the same note, albeit given a different note name, as the minor third degree above the root. This chord is used in many forms of contemporary popular music, including jazz, funk, R&B, rock and pop. As a dominant chord in diatonic harmony, it most commonly functions as a turnaround chord, returning to the tonic.
  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 been called the "Gretty chord" although this can refer to a distinct six-string version.
context_section_description: The dominant 7♯9 chord is usually found in blues contexts because in a blues scale a minor third (blue note) in the melody is usually played against a dominant seventh chord. The third of the dominant chord is the seventh degree of the scale. The chord was used in popular music as far back as the bebop era of the 1940s, and it appears with some regularity in blues and rhythm-and-blues of the 1950s and 1960s.
caption: ♯9 dominant seventh chord (on E: m3=G♮=Fdouble sharp=A9).[9] About this soundPlay (help·info)
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