How do you play the C 7/A chord?

To play the C 7/A chord on piano, play the C 7 chord (C, E, G and A#) 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 7/A chord means a C 7 chord with A in the bass.

C 7/A

Q: What notes are in the C 7/A chord?

The C 7/A chord uses the 4 notes of the C 7 chord — C (Perfect unison), E (Major third), G (Perfect fifth) and A# (Minor seventh) — with A played as the bass note in the lowest register.

The C 7 chord consists of the C (Perfect unison), E (Major third), G (Perfect fifth) and A# (Minor seventh) notes, with A as the bass note.

Piano keyboard showing the notes for a C 7/A chord

How to play the C 7/A chord

Play A as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add E (Major third) — 4 semitones above C
Add G (Perfect fifth) — 7 semitones above C
Add A# (Minor seventh) — 10 semitones above C
Press all 5 notes simultaneously to sound the C 7/A chord

Related chords with same root

A m7(b9)

Inversions with same root

A m7(b9)(#9)

Related chords with different root

C m7(add6)
C 7(add6)