Chords reference

Major Triad

A major triad is a three-note chord containing a root, a major third, and a perfect fifth.

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C Major on 6-string Guitarfull neck projection with 6 strings, frets 0 through 24, right-handed presentation, and notes labels.

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C Major Chord

Theory
Chord
Written root
C
Instrument
6-string Guitar
Tuning
E Standard
Labels
Notes
Handedness
Right handed
C Major visible positions on 6-string Guitar, using notes labels
String, low to highFretCurrent labelNoteDegreeIntervalRoot
10EE33No
13GG55No
18CC11Yes
112EE33No
115GG55No
120CC11Yes
124EE33No
23CC11Yes
27EE33No
210GG55No
215CC11Yes
219EE33No
222GG55No
32EE33No
35GG55No
310CC11Yes
314EE33No
317GG55No
322CC11Yes
40GG55No
45CC11Yes
49EE33No
412GG55No
417CC11Yes
421EE33No
424GG55No
51CC11Yes
55EE33No
58GG55No
513CC11Yes
517EE33No
520GG55No
60EE33No
63GG55No
68CC11Yes
612EE33No
615GG55No
620CC11Yes
624EE33No

Overview

The major triad is one of the four basic triad qualities. Its identity remains unchanged when its notes are reordered into inversions, doubled across octaves, or distributed into different voicings.

Construction

The authoritative definition supplies the three chord tones. Measured from the root, the major third establishes major quality and the perfect fifth completes a stable triadic frame.

SQNTIAL Theory Authority

Definition
Major
Formula
1 · 3 · 5
Pitch count
3
Family
triad

Characteristics

The outer perfect fifth provides structural stability, while the major third distinguishes the chord from a minor triad. Register, spacing, doubling, and instrumentation can change its colour without changing its quality.

Applications

Major triads function as independent chords, members of diatonic harmony, arpeggio sources, and foundations for major seventh and dominant seventh chords. They are also practical landmarks for fretboard and interval study.