C#maj9 chord
The C-sharp major ninth chord (abbreviated "C#maj9 chord") is a five-note chord consisting of the notes C♯, E♯, G♯, B♯, and D♯. The chord is formed by adding a major ninth to a C-sharp major seventh chord.
In practice, the fifth (G♯) is sometimes omitted from the C#maj9 chord because it's not always possible to play all notes simultaneously.
Name
C-sharp major ninth chord
Notes
C♯ E♯ G♯ B♯ D♯
Intervals
1 3 5 7 9
Chord symbol
C♯maj9
Alternative symbols
C♯▵9 C♯ma9 C♯MA9 C♯M9
Type
pentad (five-note chord)