C m(maj13)(#11)/F#
The C m(maj13)(#11) chord consists of the C (Perfect unison), D# (Minor third), G (Perfect fifth), B (Major seventh), D (Major ninth), F# (Augmented eleventh) and A (Major thirteenth) notes, with F# as the bass note.
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How to play the C m(maj13)(#11)/F# chord
- Play F# as the lowest bass note in the left hand
- Find C (Root) on the piano keyboard
- Add D# (Minor third) — 3 semitones above C
- Add G (Perfect fifth) — 7 semitones above C
- Add B (Major seventh) — 11 semitones above C
- Add D (Major ninth) — 14 semitones above C
- Add F# (Augmented eleventh) — 18 semitones above C
- Add A (Major thirteenth) — 21 semitones above C
- Press all 8 notes simultaneously to sound the C m(maj13)(#11)/F# chord