C#7#9 chord on piano

C Sharp Dominant Seventh Sharp Nine, also written Db7#9. Notes: C#, F, G#, B and E.

C#7#9 piano chord, root positionC4FBC5EC#G#
Root position. Tap any key to hear it.

How to play C#7#9

  1. Find C# at or above middle C. That is the root.
  2. Add F, G#, B and E 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

C#root
F3 · major third
G#5 · perfect fifth
Bb7 · minor seventh
E#9 · sharp ninth

Notes and theory

C#root
F3 · major third
G#5 · perfect fifth
Bb7 · minor seventh
E#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. Strictly by music theory the notes are spelled C#, E#, G#, B and D##; E# is the same key as F and D## is the same key as E.

More C# chords

All C# piano chords

dominant seventh sharp nine chords in every key

Questions

What notes are in the C#7#9 chord?

C#7#9 (C sharp dominant seventh sharp nine) is made of five notes: C# (root), F (major third), G# (perfect fifth), B (minor seventh) and E (sharp ninth).

How do you play C#7#9 on piano?

Play C#, F, G#, B and E 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.