C 7(sus)/A#

The C 7(sus) chord consists of the C (Perfect unison), G (Perfect fifth) and A# (Minor seventh) notes, with A# as the bass note.

Piano keyboard showing the notes for a C 7(sus)/A# chord

How to play the C 7(sus)/A# chord

  1. Play A# as the lowest bass note in the left hand
  2. Find C (Root) on the piano keyboard
  3. Add G (Perfect fifth) — 7 semitones above C
  4. Add A# (Minor seventh) — 10 semitones above C
  5. Press all 4 notes simultaneously to sound the C 7(sus)/A# chord

Related chords with different root

Related slash chords