How do you play the F 9(#11)/Bb chord?

To play the F 9(#11)/Bb chord on piano, play the F 9(#11) chord (F, A, C, Eb, G and B) with Bb as the lowest bass note. Place the Bb note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What is a slash chord?

A slash chord (or compound chord) is written as Chord/Bass and specifies both a chord and a bass note. The note to the right of the slash is played as the lowest note. The F 9(#11)/Bb chord means a F 9(#11) chord with Bb in the bass.

F 9(#11)/Bb

Q: What notes are in the F 9(#11)/Bb chord?

The F 9(#11)/Bb chord uses the 6 notes of the F 9(#11) chord — F (Perfect unison), A (Major third), C (Perfect fifth), Eb (Minor seventh), G (Major ninth) and B (Augmented eleventh) — with Bb played as the bass note in the lowest register.

The F 9(#11) chord consists of the F (Perfect unison), A (Major third), C (Perfect fifth), Eb (Minor seventh), G (Major ninth) and B (Augmented eleventh) notes, with Bb as the bass note.

Piano keyboard showing the notes for a F 9(#11)/Bb chord

How to play the F 9(#11)/Bb chord

Play Bb as the lowest bass note in the left hand
Find F (Root) on the piano keyboard
Add A (Major third) — 4 semitones above F
Add C (Perfect fifth) — 7 semitones above F
Add Eb (Minor seventh) — 10 semitones above F
Add G (Major ninth) — 14 semitones above F
Add B (Augmented eleventh) — 18 semitones above F
Press all 7 notes simultaneously to sound the F 9(#11)/Bb chord