Finger Positions

F#6/C# diagram
Root Note F#
Name F# sixth over C#
Intervals 1P-3M-5P-6M
Relative Minor D#m
Notes F#, A#, C#, D#
Aliases F#6, F#add6, F#add13, F#M6

How to play the F#6/C# Chord

The F#6/C# is a fundamental major chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the F# sixth over C# is built using the 1P, 3M, 5P, 6M intervals. In the key of F# Major, this chord functions as the I chord.

Common Progressions

In music composition, the F#6/C# chord is often used to create tension or resolution.

I-V-vi-IV

F# → C# → D#m → B

vi-IV-I-V

D#m → B → F# → C#

The Diatonic Family

Understanding the "family" of chords that belong to F# helps with transposition and ear training.

Triads

F# G#m A#m B C# D#m Fdim

7ths

F#maj7 G#m7 A#m7 Bmaj7 C#7 D#m7 Fm7b5

Scale Compatibility

View All Scales
Major Pentatonic Major Major Blues Bebop Lydian Mixolydian Scriabin Lydian Dominant Hungarian Major Lydian #9 Bebop Minor Bebop Major Ichikosucho Half-Whole Diminished Kafi Raga

* 15 scales found containing the notes F#, A#, C#, D#.

Acoustic & Digital Analysis

Digital footprint of the F#6/C# chord for MIDI programming and synthesizer sound design.

MIDI Numbers 66, 70, 61, 63
Frequencies (Hz)

369.9944227116344, 466.1637615180899, 277.1826309768721, 311.1269837220809