How do you play the A# m7(b9)(#9)/D# chord?

To play the A# m7(b9)(#9)/D# chord on piano, play the A# m7(b9)(#9) chord (A#, C#, F, G#, B and C#) 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 A# m7(b9)(#9)/D# chord means a A# m7(b9)(#9) chord with D# in the bass.

A# m7(b9)(#9)/D#

Q: What notes are in the A# m7(b9)(#9)/D# chord?

The A# m7(b9)(#9)/D# chord uses the 6 notes of the A# m7(b9)(#9) chord — A# (Perfect unison), C# (Minor third), F (Perfect fifth), G# (Minor seventh), B (Minor ninth) and C# (Minor tenth) — with D# played as the bass note in the lowest register.

The A# m7(b9)(#9) chord consists of the A# (Perfect unison), C# (Minor third), F (Perfect fifth), G# (Minor seventh), B (Minor ninth) and C# (Minor tenth) notes, with D# as the bass note.

Piano keyboard showing the notes for a A# m7(b9)(#9)/D# chord

How to play the A# m7(b9)(#9)/D# chord

Play D# as the lowest bass note in the left hand
Find A# (Root) on the piano keyboard
Add C# (Minor third) — 3 semitones above A#
Add F (Perfect fifth) — 7 semitones above A#
Add G# (Minor seventh) — 10 semitones above A#
Add B (Minor ninth) — 13 semitones above A#
Add C# (Minor tenth) — 15 semitones above A#
Press all 7 notes simultaneously to sound the A# m7(b9)(#9)/D# chord

Related chords with different root

C# 13

Related slash chords

C# m7(add6)/D#
C# 7(add6)/D#
A# m7(b9)/D#