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

To play the A m7(b9)(#9)/C# chord on piano, play the A m7(b9)(#9) chord (A, C, E, G, A# and C) with C# as the lowest bass note. Place the C# 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)/C# chord means a A m7(b9)(#9) chord with C# in the bass.

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

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

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

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

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

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

Play C# 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 E (Perfect fifth) — 7 semitones above A
Add G (Minor seventh) — 10 semitones above A
Add A# (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)/C# chord

Related chords with different root

A 7(b9)(#9)

Related slash chords

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