The C♭ Major Seventh chord is a four-note chord that consists of the root note C♭, the major third E♭, the perfect fifth G♭, and the major seventh B♭. This chord is often used in various music genres to create a rich, harmonious sound. In music theory, the C♭ Major Seventh chord can be notated as C♭maj7. It is enharmonically equivalent to the B Major Seventh chord, meaning they sound the same but are written differently. This chord is commonly found in jazz and classical music, contributing to complex harmonic progressions.