How do you play the F# maj7(#5)/C# chord?

To play the F# maj7(#5)/C# chord on piano, play the F# maj7(#5) chord (F#, A#, D 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 F# maj7(#5)/C# chord means a F# maj7(#5) chord with C# in the bass.

F# maj7(#5)/C#

Q: What notes are in the F# maj7(#5)/C# chord?

The F# maj7(#5)/C# chord uses the 4 notes of the F# maj7(#5) chord — F# (Perfect unison), A# (Major third), D (Minor sixth) and F (Major seventh) — with C# played as the bass note in the lowest register.

The F# maj7(#5) chord consists of the F# (Perfect unison), A# (Major third), D (Minor sixth) and F (Major seventh) notes, with C# as the bass note.

Piano keyboard showing the notes for a F# maj7(#5)/C# chord

How to play the F# maj7(#5)/C# chord

Play C# as the lowest bass note in the left hand
Find F# (Root) on the piano keyboard
Add A# (Major third) — 4 semitones above F#
Add D (Minor sixth) — 8 semitones above F#
Add F (Major seventh) — 11 semitones above F#
Press all 5 notes simultaneously to sound the F# maj7(#5)/C# chord