F 7(#5)/A#

The F 7(#5) chord consists of the F (Perfect unison), A (Major third), C# (Minor sixth) and D# (Minor seventh) notes, with A# as the bass note.

Piano keyboard showing the notes for a F 7(#5)/A# chord

How to play the F 7(#5)/A# chord

  1. Play A# as the lowest bass note in the left hand
  2. Find F (Root) on the piano keyboard
  3. Add A (Major third) — 4 semitones above F
  4. Add C# (Minor sixth) — 8 semitones above F
  5. Add D# (Minor seventh) — 10 semitones above F
  6. Press all 5 notes simultaneously to sound the F 7(#5)/A# chord