C13 chord
The C dominant thirteenth chord (abbreviated "C13 chord") is a seven-note chord consisting of the notes C, E, G, B♭, D, F, and A. The chord is formed by adding a thirteenth to a C dominant eleventh chord.
In practice, the fifth (G) and eleventh (F) are often omitted from the C13 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.
Name
C dominant thirteenth chord
Notes
C E G B♭ D F A
Intervals
1 3 5 ♭7 9 11 13
Chord symbol
C13
Type
heptad (seven-note chord)