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F#7#9 Piano Chord

A raw, urgent sound containing both a major third and a minor third (augmented ninth = minor third). Made famous by Jimi Hendrix in "Purple Haze". A staple of blues-rock and funk.

Piano

Recommended voicing
Left hand F#2 · E3 fingers 5–1
Right hand A#3 · A4 fingers 1–5

How to play the F#7#9 chord on piano

Split the recommended voicing between the hands: play F#2 and E3 with the left hand and A#3 and A4 with the right. Suggested fingering is 5–1 on the left and 1–5 on the right (1 is the thumb). The perfect fifth C# can usually be omitted from an extended chord, keeping the sound clear and the voicing manageable.

Other names for the F#7#9 chord

Other names: F# 7th sharp 9, F# Hendrix chord

Music theory name: seventh sharp nine chord

Common name: F# Hendrix chord

Notes and intervals in the F#7#9 chord

Note Interval
F# Root
A# Major 3rd
C# Perfect 5th
E Minor 7th
A Augmented 9th

More chords with F# as the root

The same chord type in other keys