E-flat Minor is a musical key that consists of six flats in its key signature. It is often associated with a somber or melancholic mood, making it a popular choice for various genres, including classical and jazz. Compositions in this key can evoke deep emotions and are frequently used to express themes of sadness or introspection. Notable works in E-flat Minor include Frédéric Chopin's Nocturne in E-flat Minor and Johannes Brahms' Symphony No. 3. The key is less commonly used than major keys, but its unique sound provides a rich palette for composers and musicians to explore emotional depth in their music.