C · Guitar

A room full of friends, somebody borrows a guitar, and the first sound out is almost always a chord like this. C major is half the world's starting point. Hit play below.

Listen first

What you just heard

Play the arpeggio again, no rush. There are only three: C, E and G. The middle one is the one that matters. That's the major third, and it's what gives this chord its wide-open-day face — remember the name, because in a minute we'll move exactly that note and you'll hear the weather change.

Now it's your hands' turn

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 uses 2 open strings, so the guitar does half the work for you — the position marked with ⭐ is the easiest to play. Before you get discouraged for nothing: play the notes one by one before strumming. If one sounds muffled, a finger is touching the next string. Adjust, try again. Everyone goes through it; it doesn't last.

Precision Tuner — Before you play these shapes, get in tune — chromatic tuner and reference tones · use it in Chord & Fret

Above, the same C, higher up the neck. No rush — but the day a song wants this chord brighter and tighter, you'll already have the address.

Every shape of C lives in Chord & Fret Pro — 4 instruments, 16 tunings, 41 chord types and 57 scales, in every key. Start free. Unlock everything with Pro. 100% offline. Made by musicians, no ads.

What is C?

C: C Major. The notes are C, E, G (fixed-do: Do, Mi, Sol) — the degrees 1–3–5.

Where this chord lives

In real music, where does it earn its keep? Almost always as VII in D minor, VI in E minor, III in A minor. 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? Move the whole chart and find the easiest capo · see it in Chord & Fret

Identify Chord — Found a shape on your own fretboard? The app names it back · try it in Chord & Fret

Real songs pass through here: Sertanejo · eixo pop · Sertanejo · clássica caipira · Pop · axis · Pop · axis rotação · Mpb · ii-V-I · Mpb · IV ao iv (ref. conceito)

Where it tends to go

Treating C as the home chord (I) of its key, it tends to go toward the pre-dominant (Dm / F) or the dominant (G / B°) — and the dominant pulls back home. It's a tendency, not a law.

When you want to go further

When the solo comes around, 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 whole scale on the neck — in boxes or 3 notes per string; on the major modes, on guitar in standard tuning, with the CAGED forms named · see it in Chord & Fret

Improvising in context

To improvise over C as home, the C Ionian scale covers it whole — it contains every note of the chord. And when the dominant (G) pulls back, the leading tone B is the note that wants to resolve home.

Swaps that work:

• Am7 — Relative minor (vi) — same tonic function
• Em7 — Mediant (iii) — tonic function

Reharmonize — Want richer substitutions? Reharmonize the progression in a tap · open in Chord & Fret

One last test: play C and let it ring. Comfortable, right? Exactly. Now come see what happens when we add one note and take that comfort away: C7.

Updated July 9, 2026