How do you play the C addb9/B chord?

To play the C addb9/B chord on piano, play the C addb9 chord (C, E, G and C#) 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 addb9/B chord means a C addb9 chord with B in the bass.

C addb9/B

Q: What notes are in the C addb9/B chord?

The C addb9/B chord uses the 4 notes of the C addb9 chord — C (Perfect unison), E (Major third), G (Perfect fifth) and C# (Minor ninth) — with B played as the bass note in the lowest register.

The C addb9 chord consists of the C (Perfect unison), E (Major third), G (Perfect fifth) and C# (Minor ninth) notes, with B as the bass note.

Piano keyboard showing the notes for a C addb9/B chord

How to play the C addb9/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
Add G (Perfect fifth) — 7 semitones above C
Add C# (Minor ninth) — 13 semitones above C
Press all 5 notes simultaneously to sound the C addb9/B chord

Related slash chords

C# m(maj7)(b5)/B