How do you play the C m(add11)/B chord?

To play the C m(add11)/B chord on piano, play the C m(add11) chord (C, D#, G and F) 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 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(add11)/B chord means a C m(add11) chord with B in the bass.

C m(add11)/B

Q: What notes are in the C m(add11)/B chord?

The C m(add11)/B chord uses the 4 notes of the C m(add11) chord — C (Perfect unison), D# (Minor third), G (Perfect fifth) and F (Perfect eleventh) — with B played as the bass note in the lowest register.

The C m(add11) chord consists of the C (Perfect unison), D# (Minor third), G (Perfect fifth) and F (Perfect eleventh) notes, with B as the bass note.

Piano keyboard showing the notes for a C m(add11)/B chord

How to play the C m(add11)/B chord

Play B 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 (Perfect fifth) — 7 semitones above C
Add F (Perfect eleventh) — 17 semitones above C
Press all 5 notes simultaneously to sound the C m(add11)/B chord

Related slash chords

F 7(sus2)/B
F 9(sus2)/B