Extended · C root
C13
The fullest dominant extension. Contains almost every scale degree.
Notes in C13
C is the natural starting point — no sharps or flats. The clearest key to hear chord quality in isolation.
Identify the Chord Quality on C
Each chord below is played on C. Listen and identify whether you heard C13, Cm, C7, or another quality — the hardest and most useful ear training skill.
13th in All 12 Keys
Other Chords in C
Related Extended
About the C13 Chord
The C13 chord is a 13th chord built on C. It contains the notes C, E, G, A#, D, F, A — the root, third, fifth, seventh, and extensions.
The fullest dominant extension. Contains almost every scale degree. Practising the C13 chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.