C m(addb9)/F

The C m(addb9) chord consists of the C (Perfect unison), D# (Minor third), G (Perfect fifth) and C# (Minor ninth) notes, with F as the bass note.

Piano keyboard showing the notes for a C m(addb9)/F chord

How to play the C m(addb9)/F chord

  1. Play F as the lowest bass note in the left hand
  2. Find C (Root) on the piano keyboard
  3. Add D# (Minor third) — 3 semitones above C
  4. Add G (Perfect fifth) — 7 semitones above C
  5. Add C# (Minor ninth) — 13 semitones above C
  6. Press all 5 notes simultaneously to sound the C m(addb9)/F chord