C# Major Ninth for Bass
A C# Major ninth chord, also written as C#maj9, C#Δ9, C#ma9 or C#M9 contains the notes C#, E#, G#, B# and D#. The chord is comprised of the intervals M3, m3, M3 and m3.
C
E
G
B
D
M3
m3
M3
m3