How do you play the B sus4(b5)/C# chord?

To play the B sus4(b5)/C# chord on piano, play the B sus4(b5) chord (B, E and F) 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 B sus4(b5)/C# chord means a B sus4(b5) chord with C# in the bass.

B sus4(b5)/C#

Q: What notes are in the B sus4(b5)/C# chord?

The B sus4(b5)/C# chord uses the 3 notes of the B sus4(b5) chord — B (Perfect unison), E (Perfect fourth) and F (Diminished fifth) — with C# played as the bass note in the lowest register.

The B sus4(b5) chord consists of the B (Perfect unison), E (Perfect fourth) and F (Diminished fifth) notes, with C# as the bass note.

Piano keyboard showing the notes for a B sus4(b5)/C# chord

How to play the B sus4(b5)/C# chord

Play C# as the lowest bass note in the left hand
Find B (Root) on the piano keyboard
Add E (Perfect fourth) — 5 semitones above B
Add F (Diminished fifth) — 6 semitones above B
Press all 4 notes simultaneously to sound the B sus4(b5)/C# chord

Inversions with same root

C# 7(#9)(no5)

Related slash chords

F maj7(b5)(sus)/C#