How do you play the C m(maj7)(#5)/A chord?

To play the C m(maj7)(#5)/A chord on piano, play the C m(maj7)(#5) chord (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 C m(maj7)(#5)/A chord means a C m(maj7)(#5) chord with A in the bass.

C m(maj7)(#5)/A

Q: What notes are in the C m(maj7)(#5)/A chord?

The C m(maj7)(#5)/A chord uses the 4 notes of the C m(maj7)(#5) chord — C (Perfect unison), D# (Minor third), G# (Minor sixth) and B (Major seventh) — with A played as the bass note in the lowest register.

The C m(maj7)(#5) chord consists of the C (Perfect unison), D# (Minor third), G# (Minor sixth) and B (Major seventh) notes, with A as the bass note.

Piano keyboard showing the notes for a C m(maj7)(#5)/A chord

How to play the C m(maj7)(#5)/A chord

Play A as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add D# (Minor third) — 3 semitones above C
Add G# (Minor sixth) — 8 semitones above C
Add B (Major seventh) — 11 semitones above C
Press all 5 notes simultaneously to sound the C m(maj7)(#5)/A chord