How do you play the G# m7(#9)/B chord?

To play the G# m7(#9)/B chord on piano, play the G# m7(#9) chord (G#, B, D#, F# and B) with B as the lowest bass note. Place the B 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 G# m7(#9)/B chord means a G# m7(#9) chord with B in the bass.

G# m7(#9)/B

Q: What notes are in the G# m7(#9)/B chord?

The G# m7(#9)/B chord uses the 5 notes of the G# m7(#9) chord — G# (Perfect unison), B (Minor third), D# (Perfect fifth), F# (Minor seventh) and B (Minor tenth) — with B played as the bass note in the lowest register.

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

Piano keyboard showing the notes for a G# m7(#9)/B chord

How to play the G# m7(#9)/B chord

Play B as the lowest bass note in the left hand
Find G# (Root) on the piano keyboard
Add B (Minor third) — 3 semitones above G#
Add D# (Perfect fifth) — 7 semitones above G#
Add F# (Minor seventh) — 10 semitones above G#
Add B (Minor tenth) — 15 semitones above G#
Press all 6 notes simultaneously to sound the G# m7(#9)/B chord

Inversions with same root

B 6
B add13

Related chords with different root

G# m7
G# m7(#9)

Related slash chords

G# 7(sus)/B