How do you play the C 3/B chord?

To play the C 3/B chord on piano, play the C 3 chord (C and E) with B as the lowest bass note. Place the B note below the other chord tones. Slash chords specify a particular bass note different from the chord root.

What notes are in the C 3/B chord?

The C 3/B chord uses the 2 notes of the C 3 chord — C (Perfect unison) and E (Major third) — with B played as the bass note in the lowest register.

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 3/B chord means a C 3 chord with B in the bass.

C 3/B

The C 3 chord consists of the C (Perfect unison) and E (Major third) notes, with B as the bass note.

Piano keyboard showing the notes for a C 3/B chord

How to play the C 3/B chord

Play B as the lowest bass note in the left hand
Find C (Root) on the piano keyboard
Add E (Major third) — 4 semitones above C
Press all 3 notes simultaneously to sound the C 3/B chord