C7#9 chord on piano

C Dominant Seventh Sharp Nine. Notes: C, E, G, Bb and D#.

C7#9 piano chord, root positionCEGC5BbD#
Root position. Tap any key to hear it.

How to play C7#9

  1. Find C at or above middle C. That is the root.
  2. Add E, G, Bb and D# above it, skipping the keys in between.
  3. Right hand fingering: 1-2-3-4-5, or split the chord between both hands. Left hand: play the root and fifth, and leave the upper notes to the right hand.

Notes

Croot
E3 · major third
G5 · perfect fifth
Bbb7 · minor seventh
D##9 · sharp ninth

Notes and theory

Croot
E3 · major third
G5 · perfect fifth
Bbb7 · minor seventh
D##9 · sharp ninth

The 7#9 has both a major third and a sharp ninth (which sounds like a minor third). It is famous as the Hendrix chord from Purple Haze. The formula is 1 3 5 b7 #9.

More C chords

All C piano chords

dominant seventh sharp nine chords in every key

Questions

What notes are in the C7#9 chord?

C7#9 (C dominant seventh sharp nine) is made of five notes: C (root), E (major third), G (perfect fifth), Bb (minor seventh) and D# (sharp ninth).

How do you play C7#9 on piano?

Play C, E, G, Bb and D# together. With the right hand use fingers 1-2-3-4-5, or split the chord between both hands; with the left hand use play the root and fifth, and leave the upper notes to the right hand.

What does a dominant seventh sharp nine chord sound like?

The 7#9 has both a major third and a sharp ninth (which sounds like a minor third). It is famous as the Hendrix chord from Purple Haze.