A Major Seventh Chord is a type of chord that consists of four notes: the root, major third, perfect fifth, and major seventh. For example, in a C Major Seventh Chord, the notes are C, E, G, and B. This chord creates a rich, harmonious sound often used in various music genres, including jazz and pop. The major seventh interval gives the chord its distinctive quality, making it sound more complex than a standard major chord. Musicians often use Major Seventh Chords to add depth and emotion to their compositions, enhancing the overall musical experience.