How do you play the F# m9(#11)/C# chord?

To play the F# m9(#11)/C# chord on piano, play the F# m9(#11) chord (F#, A, C#, E, G# and C) 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# m9(#11)/C# chord means a F# m9(#11) chord with C# in the bass.

F# m9(#11)/C#

Q: What notes are in the F# m9(#11)/C# chord?

The F# m9(#11)/C# chord uses the 6 notes of the F# m9(#11) chord — F# (Perfect unison), A (Minor third), C# (Perfect fifth), E (Minor seventh), G# (Major ninth) and C (Augmented eleventh) — with C# played as the bass note in the lowest register.

The F# m9(#11) chord consists of the F# (Perfect unison), A (Minor third), C# (Perfect fifth), E (Minor seventh), G# (Major ninth) and C (Augmented eleventh) notes, with C# as the bass note.

Piano keyboard showing the notes for a F# m9(#11)/C# chord

How to play the F# m9(#11)/C# chord

Play C# as the lowest bass note in the left hand
Find F# (Root) on the piano keyboard
Add A (Minor third) — 3 semitones above F#
Add C# (Perfect fifth) — 7 semitones above F#
Add E (Minor seventh) — 10 semitones above F#
Add G# (Major ninth) — 14 semitones above F#
Add C (Augmented eleventh) — 18 semitones above F#
Press all 7 notes simultaneously to sound the F# m9(#11)/C# chord

Related chords with different root

F# m9(#11)

Related slash chords

A m(maj7)(add13)/C#