How do you play the A m(maj9)(#11)/C# chord?

To play the A m(maj9)(#11)/C# chord on piano, play the A m(maj9)(#11) chord (A, C, E, G#, B and D#) 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 m(maj9)(#11)/C# chord means a A m(maj9)(#11) chord with C# in the bass.

A m(maj9)(#11)/C#

Q: What notes are in the A m(maj9)(#11)/C# chord?

The A m(maj9)(#11)/C# chord uses the 6 notes of the A m(maj9)(#11) chord — A (Perfect unison), C (Minor third), E (Perfect fifth), G# (Major seventh), B (Major ninth) and D# (Augmented eleventh) — with C# played as the bass note in the lowest register.

The A m(maj9)(#11) chord consists of the A (Perfect unison), C (Minor third), E (Perfect fifth), G# (Major seventh), B (Major ninth) and D# (Augmented eleventh) notes, with C# as the bass note.

Piano keyboard showing the notes for a A m(maj9)(#11)/C# chord

How to play the A m(maj9)(#11)/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# (Major seventh) — 11 semitones above A
Add B (Major ninth) — 14 semitones above A
Add D# (Augmented eleventh) — 18 semitones above A
Press all 7 notes simultaneously to sound the A m(maj9)(#11)/C# chord