How do you play the B maj13(#11)/A chord?

To play the B maj13(#11)/A chord on piano, play the B maj13(#11) chord (B, D#, F#, A#, C#, F and G#) with A as the lowest bass note. Place the A 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 B maj13(#11)/A chord means a B maj13(#11) chord with A in the bass.

B maj13(#11)/A

Q: What notes are in the B maj13(#11)/A chord?

The B maj13(#11)/A chord uses the 7 notes of the B maj13(#11) chord — B (Perfect unison), D# (Major third), F# (Perfect fifth), A# (Major seventh), C# (Major ninth), F (Augmented eleventh) and G# (Major thirteenth) — with A played as the bass note in the lowest register.

The B maj13(#11) chord consists of the B (Perfect unison), D# (Major third), F# (Perfect fifth), A# (Major seventh), C# (Major ninth), F (Augmented eleventh) and G# (Major thirteenth) notes, with A as the bass note.

Piano keyboard showing the notes for a B maj13(#11)/A chord

How to play the B maj13(#11)/A chord

Play A as the lowest bass note in the left hand
Find B (Root) on the piano keyboard
Add D# (Major third) — 4 semitones above B
Add F# (Perfect fifth) — 7 semitones above B
Add A# (Major seventh) — 11 semitones above B
Add C# (Major ninth) — 14 semitones above B
Add F (Augmented eleventh) — 18 semitones above B
Add G# (Major thirteenth) — 21 semitones above B
Press all 8 notes simultaneously to sound the B maj13(#11)/A chord