A major chord is a type of musical chord that consists of three specific notes: the root note, the major third, and the perfect fifth. For example, in a C major chord, the notes are C (the root), E (the major third), and G (the perfect fifth). Major chords are often described as having a bright, happy sound. In music theory, major chords are fundamental building blocks for creating harmony. They are commonly used in various genres, including pop, rock, and classical music. Understanding major chords is essential for musicians and composers when crafting melodies and chord progressions.