How do you play the F maj7(#11)/C# chord?

To play the F maj7(#11)/C# chord on piano, play the F maj7(#11) chord (F, A, C, E and B) 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(#11)/C# chord means a F maj7(#11) chord with C# in the bass.

F maj7(#11)/C#

Q: What notes are in the F maj7(#11)/C# chord?

The F maj7(#11)/C# chord uses the 5 notes of the F maj7(#11) chord — F (Perfect unison), A (Major third), C (Perfect fifth), E (Major seventh) and B (Augmented eleventh) — with C# played as the bass note in the lowest register.

The F maj7(#11) chord consists of the F (Perfect unison), A (Major third), C (Perfect fifth), E (Major seventh) and B (Augmented eleventh) notes, with C# as the bass note.

Piano keyboard showing the notes for a F maj7(#11)/C# chord

How to play the F maj7(#11)/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 C (Perfect fifth) — 7 semitones above F
Add E (Major seventh) — 11 semitones above F
Add B (Augmented eleventh) — 18 semitones above F
Press all 6 notes simultaneously to sound the F maj7(#11)/C# chord