A major chord is a type of musical chord that consists of three specific notes: the root, the major third, and the perfect fifth. For example, in a C major chord, the notes are C (root), E (major third), and G (perfect fifth). Major chords are often described as having a bright, happy sound and are commonly used in various music genres. In music theory, major chords are built using the formula of a major scale. The major third interval is four half steps above the root, while the perfect fifth is seven half steps above the root. This structure is fundamental in creating harmony and is essential for understanding more complex chords and progressions in music.