Extended · C root
C11
Dense and atmospheric. The 11th adds a suspended quality over the dominant.
Notes in C11
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 C11, Cm, C7, or another quality — the hardest and most useful ear training skill.
11th in All 12 Keys
Other Chords in C
Related Extended
About the C11 Chord
The C11 chord is a 11th chord built on C. It contains the notes C, E, G, A#, D, F — the root, third, fifth, seventh, and extensions.
Dense and atmospheric. The 11th adds a suspended quality over the dominant. Practising the C11 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.