How do you play the C# 11(sus4)/A# chord?

To play the C# 11(sus4)/A# chord on piano, play the C# 11(sus4) chord (C#, F# and B) with A# as the lowest bass note. Place the A# 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# 11(sus4)/A# chord means a C# 11(sus4) chord with A# in the bass.

C# 11(sus4)/A#

Q: What notes are in the C# 11(sus4)/A# chord?

The C# 11(sus4)/A# chord uses the 3 notes of the C# 11(sus4) chord — C# (Perfect unison), F# (Perfect fourth) and B (Minor seventh) — with A# played as the bass note in the lowest register.

The C# 11(sus4) chord consists of the C# (Perfect unison), F# (Perfect fourth) and B (Minor seventh) notes, with A# as the bass note.

Piano keyboard showing the notes for a C# 11(sus4)/A# chord

How to play the C# 11(sus4)/A# chord

Play A# as the lowest bass note in the left hand
Find C# (Root) on the piano keyboard
Add F# (Perfect fourth) — 5 semitones above C#
Add B (Minor seventh) — 10 semitones above C#
Press all 4 notes simultaneously to sound the C# 11(sus4)/A# chord

Related chords with different root

F# add11
B maj7(sus2)
B maj9(sus2)

Related slash chords

F# sus4/A#
B sus2/A#
B 5(add9)/A#