Root position
C – E – GThe root C is the lowest note. This is the shape most people learn first.
3 notes · 1 · 3 · 5
C major is built from C, E and G — the formula 1 · 3 · 5, or 4 and 7 semitones above C. The shape uses white keys only, and you can hear it, invert it and compare it below.
Chord
Notes
C · E · GFormula
1 · 3 · 5Right hand
1 · 3 · 5Choose a chord, then play it. Finger numbers run from thumb (1) to little finger (5).
The finder above already holds C. Press P or the Play chord button to hear C, E, G sounded together, then change the root or the chord type to compare it with something else.
Chord tones
A major triad stacks a major third and then a minor third above the root. That order gives the bright, settled sound most beginner songs are built on. Major triads sit on the first, fourth and fifth degrees of any major scale, which is why they turn up in so many chord progressions.
| Note | Interval | Degree | Semitones | Right hand |
|---|---|---|---|---|
| Cwhite key | Root | 1 | 0 | 1 · thumb |
| Ewhite key | Major third | 3 | 4 | 3 · middle finger |
| Gwhite key | Perfect fifth | 5 | 7 | 5 · little finger |
Step by step
Inversions
An inversion keeps the same 3 notes and simply moves the lowest one up an octave. Learning them means you can change chords with small hand movements instead of jumping to a new part of the keyboard.
The root C is the lowest note. This is the shape most people learn first.
E is the lowest note, so the major third sits in the bass and the notes below it move up an octave.
G is the lowest note, so the perfect fifth sits in the bass and the notes below it move up an octave.
In context
In C major the chord functions as I. Altogether it is produced by the scales of 7 keys, so learning it once pays off in several places.
Chord tones are spelled by the degree they occupy, so the third of a minor chord is written as a flat rather than a sharp even though it is the same key on the piano. A double sharp such as F## means the key one whole tone above F.
Compare
C major and C minor share C and G. Moving the minor third Eb up 1 semitone to the major third E turns C minor into C major.
Practise the pair together: hold the shared notes C, G still and move only the one finger. Hearing that single change is the quickest way to recognise the two chords by ear.
Open C minor →Good questions
C major contains C, E and G. Counted from the root, that is the formula 1 · 3 · 5, or 4 and 7 semitones above C.
A comfortable beginner fingering is 1 (thumb) on C, 3 (middle finger) on E and 5 (little finger) on G. Finger numbers run from the thumb (1) to the little finger (5), and they change once you start using inversions.
C major and C minor share C and G. Moving the minor third Eb up 1 semitone to the major third E turns C minor into C major.
It occurs naturally in C major (I), F major (V), G major (IV), D minor (VII), E minor (VI) and F harmonic minor (V) among others. The roman numeral shows which degree of the key the chord is built on.
root position is C – E – G, first inversion is E – G – C and second inversion is G – C – E. Every inversion holds the same notes; only the lowest one changes.