C# guitar chord

C# (C sharp major) is built from C#, E# and G#, the degrees 1–3–5. On guitar, the main shape is x 4 6 6 6 4, the first diagram, marked with the star.

Some chords decorate a song; some chords hold it up. C# major is the holding kind: foundation, not ornament. Give the audio below a listen and feel the floor.

Hear C# before you play

Why C# sounds this way

Now listen to the arpeggio, one note at a time. There are only three: C#, F and G#. Keep your ear on the middle one. That's the major third, and it's what gives this chord its wide-open-day face — file that name away, because in a minute we'll move exactly that note and you'll hear the weather change.

How to play C# on guitar

On the guitar, six strings give the chord room to breathe — some positions use them all, others ask you to mute the lowest ones. So start with the first position below — it's the main shape — that's why it carries the ⭐. Advice from someone who's seen this scene a thousand times: play the notes one by one before strumming. If one sounds muffled, a finger is touching the next string. Adjust, try again. It bugs you for a week and then it's automatic.

Precision Tuner: Get in tune before you play: chromatic tuner and reference tones, free in standard tuning · use it in Chord and Fret

The other positions are the same chord living on different floors of the neck. You don't need them today. But when a song asks for it higher and tighter, you'll know where it lives.

C# notes and degrees

C# stacks the root C#, the major third E# and the perfect fifth G#.

Where C# shows up

So where does this chord show up in real life? Almost always as VII in D# minor, III in A# minor, I in C# major. Don't memorize that — just notice that the same shape plays different roles in different songs, the way a word changes meaning with the sentence.

Transpose & Capo: Need it in another key? Transpose the progression for free; finding the best capo is part of Pro · open in Chord and Fret

Identify Chord: Found a shape on your fretboard? Mark it on the screen and the app names the chord, 5 times a day for free · see it in Chord and Fret

Real songs pass through here: Gospel · extended ii-V-I

Where C# usually goes

Treating C# as the home chord (I) of its key, it usually moves toward the pre-dominant (D#m / F#) or the dominant (G# / B#°), and the dominant pulls back home. It's a tendency, not a law.

Going beyond C#

When it's time to improvise over it, C# Ionian (C# D# E# F# G# A# B# · 1 2 3 4 5 6 7: the plain major scale, where everything starts); C# Lydian (C# D# E# F## G# A# B# · 1 2 3 #4 5 6 7: the major scale with a raised fourth — one extra step of daydream) fit entirely. The swaps below are for when your ear gets bored of the obvious.

Scale: The scale's positions across the neck, with degree, note and finger labels, free; playing the scale and the tempo-ramp exercise are part of Pro · use it in Chord and Fret

Scales to improvise over C#

To improvise over C# as home, the C# Ionian scale covers it whole: it contains every note of the chord. The best fit depends on the key, the surrounding chords and the tensions you want. And when the dominant (G#) pulls back, the leading tone C is the note that wants to resolve home.

Swaps that work:

• A#m7A#m7A#m7A#m7 — Relative minor (vi) — same tonic function
• Fm7Fm7Fm7Fm7 — Mediant (iii) — tonic function

Reharmonize: Want richer substitutions? Reharmonize's Subtle and Medium levels are free; Bold and Jazz are part of Pro · try it in Chord and Fret

C# is home. And home makes more sense once you step outside for a minute: C#7 is the door — go see what's out there.

Updated October 20, 2026