How do you play the A 9(b5)/A# chord?

To play the A 9(b5)/A# chord on piano, play the A 9(b5) chord (A, C#, D#, G and B) 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 A 9(b5)/A# chord means a A 9(b5) chord with A# in the bass.

A 9(b5)/A#

Q: What notes are in the A 9(b5)/A# chord?

The A 9(b5)/A# chord uses the 5 notes of the A 9(b5) chord — A (Perfect unison), C# (Major third), D# (Diminished fifth), G (Minor seventh) and B (Major ninth) — with A# played as the bass note in the lowest register.

The A 9(b5) chord consists of the A (Perfect unison), C# (Major third), D# (Diminished fifth), G (Minor seventh) and B (Major ninth) notes, with A# as the bass note.

Piano keyboard showing the notes for a A 9(b5)/A# chord

How to play the A 9(b5)/A# chord

Play A# as the lowest bass note in the left hand
Find A (Root) on the piano keyboard
Add C# (Major third) — 4 semitones above A
Add D# (Diminished fifth) — 6 semitones above A
Add G (Minor seventh) — 10 semitones above A
Add B (Major ninth) — 14 semitones above A
Press all 6 notes simultaneously to sound the A 9(b5)/A# chord

Related slash chords

B 9(#5)/A#