How do you play the B m7(#11)/D# chord?

To play the B m7(#11)/D# chord on piano, play the B m7(#11) chord (B, D, F#, A and F) with D# as the lowest bass note. Place the D# 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 m7(#11)/D# chord means a B m7(#11) chord with D# in the bass.

B m7(#11)/D#

Q: What notes are in the B m7(#11)/D# chord?

The B m7(#11)/D# chord uses the 5 notes of the B m7(#11) chord — B (Perfect unison), D (Minor third), F# (Perfect fifth), A (Minor seventh) and F (Augmented eleventh) — with D# played as the bass note in the lowest register.

The B m7(#11) chord consists of the B (Perfect unison), D (Minor third), F# (Perfect fifth), A (Minor seventh) and F (Augmented eleventh) notes, with D# as the bass note.

Piano keyboard showing the notes for a B m7(#11)/D# chord

How to play the B m7(#11)/D# chord

Play D# as the lowest bass note in the left hand
Find B (Root) on the piano keyboard
Add D (Minor third) — 3 semitones above B
Add F# (Perfect fifth) — 7 semitones above B
Add A (Minor seventh) — 10 semitones above B
Add F (Augmented eleventh) — 18 semitones above B
Press all 6 notes simultaneously to sound the B m7(#11)/D# chord