C Major Thirteenth for Bass
A C Major thirteenth chord, also written as Cmaj13, CΔ13, Cma13 or CM13 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