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C#alt Piano Chord

A dominant chord with maximum tension — the specific tones (b5, #5, b9, #9) are chosen by the player based on context. An advanced jazz chord where the listed intervals represent one common voicing.

Piano

Recommended voicing
Left hand C#3 · B3 fingers 5–1
Right hand G4 · E5 · E#5 fingers 1–4–5

How to play the C#alt chord on piano

Split the recommended voicing between the hands: play C#3 and B3 with the left hand and G4, E5 and E#5 with the right. Suggested fingering is 5–1 on the left and 1–4–5 on the right (1 is the thumb).

Other names for the C#alt chord

Other names: C# altered

Music theory name: altered dominant chord

Common name: C# altered chord

Notes and intervals in the C#alt chord

Note Interval
C# Root
E# Major 3rd
G Diminished 5th
B Minor 7th
E Augmented 9th

More chords with C# as the root

The same chord type in other keys