The C-sharp dominant seventh flat five chord (abbreviated "C#7(b5) chord") is a four-note chord consisting of the notes C, E, G, and B. The chord is formed by lowering the fifth of a C-sharp dominant seventh chord a half step.

Name
C-sharp dominant seventh flat five chord
Notes
C E G B
Intervals
1 3 5 7
Chord symbol
C7(b5)
Alternative symbol
C7b5
Type
tetrad (four-note chord)

C#7(b5) chord on piano

C#7(b5) chord on guitar

C#7(b5) chord on ukulele

C#7(b5) chord on the staff