How do you play the G 7(alt)/C chord?

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

G 7(alt)/C

Q: What notes are in the G 7(alt)/C chord?

The G 7(alt)/C chord uses the 5 notes of the G 7(alt) chord — G (Perfect unison), B (Major third), D# (Minor sixth), F (Minor seventh) and A# (Minor tenth) — with C played as the bass note in the lowest register.

The G 7(alt) chord consists of the G (Perfect unison), B (Major third), D# (Minor sixth), F (Minor seventh) and A# (Minor tenth) notes, with C as the bass note.

Piano keyboard showing the notes for a G 7(alt)/C chord

How to play the G 7(alt)/C chord

Play C as the lowest bass note in the left hand
Find G (Root) on the piano keyboard
Add B (Major third) — 4 semitones above G
Add D# (Minor sixth) — 8 semitones above G
Add F (Minor seventh) — 10 semitones above G
Add A# (Minor tenth) — 15 semitones above G
Press all 6 notes simultaneously to sound the G 7(alt)/C chord