C# Major Thirteenth for 7 String Guitar
A C# Major thirteenth chord, also written as C#maj13, C#Δ13, C#ma13 or C#M13 contains the notes C#, E#, G#, B#, D#, F# and A#. The chord is comprised of the intervals M3, m3, M3, m3, m3 and M3.
C
E
G
B
D
F
A
M3
m3
M3
m3
m3
M3