The C-sharp augmented chord (abbreviated "C#aug chord") is a triad consisting of the notes C, E, and G. The chord is formed by raising the fifth of a C-sharp major chord a half step.

Name
C-sharp augmented chord
Synonym
C-sharp augmented triad
Notes
C E G
Intervals
1 3 5
Chord symbol
C+
Alternative symbols
Caug C(#5)
Type
triad (three-note chord)

C#aug chord on piano

C#aug chord on guitar

C#aug chord on ukulele

C#aug chord on the staff