E Dominant 9th

Fretboard

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The E9 dominant ninth (E–G♯–B–D–F♯) extends a dominant 7 with a ninth. The F♯ adds brightness and harmonic richness without affecting the chord’s dominant function — the tritone between G♯ and D is still present and still drives resolution to A. The 3rd and ♭7 remain essential; the 5th is routinely dropped on guitar to make room for the 9th without creating a muddy cluster. Common in funk, jazz, and blues as a more colorful version of the dominant 7. Compared to E7, the 9th adds shimmer and modernity; the resolution tendency is identical.

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