C 7#9

C7#9

chord

At a Glance

Formula:
C dominant7sharp9
Notes:
C, E, G, A#, D#

Piano

Fretboard

×1234

Degree 5 omitted - doesn't fit six strings within a playable hand span.

What It Is

A dominant seventh chord plus a raised (sharp) ninth above the root - often called the 'Hendrix chord'. Notes: C, E, G, Bb, D#.

How It Functions

Combines a major third with a blues-inflected, minor-third-sounding sharp ninth (the same pitch class, spelled differently) for a gritty, dissonant dominant color.

Appears In These Progressions

Not found in any of the seeded progressions or cadences.

Real Song Examples

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