How do you play the C# sus(#4)/A# chord?

To play the C# sus(#4)/A# chord on piano, play the C# sus(#4) chord (C#, G and G#) 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# sus(#4)/A# chord means a C# sus(#4) chord with A# in the bass.

C# sus(#4)/A#

Q: What notes are in the C# sus(#4)/A# chord?

The C# sus(#4)/A# chord uses the 3 notes of the C# sus(#4) chord — C# (Perfect unison), G (Diminished fifth) and G# (Perfect fifth) — with A# played as the bass note in the lowest register.

The C# sus(#4) chord consists of the C# (Perfect unison), G (Diminished fifth) and G# (Perfect fifth) notes, with A# as the bass note.

Piano keyboard showing the notes for a C# sus(#4)/A# chord

How to play the C# sus(#4)/A# chord

Play A# as the lowest bass note in the left hand
Find C# (Root) on the piano keyboard
Add G (Diminished fifth) — 6 semitones above C#
Add G# (Perfect fifth) — 7 semitones above C#
Press all 4 notes simultaneously to sound the C# sus(#4)/A# chord

Related slash chords

G Viennese trichord/A#