The C# Minor Seventh Chord is a four-note chord that consists of the root note C#, the minor third E, the perfect fifth G#, and the minor seventh B. This chord is commonly used in various music genres, providing a rich and complex sound that adds depth to compositions. In music theory, the C# Minor Seventh Chord is often notated as C#m7. It can be played on various instruments, including the piano and guitar, and is frequently found in jazz, blues, and pop music. Understanding this chord can enhance a musician's ability to create and interpret music effectively.