A-Flat Minor is a musical key that consists of seven notes: A♭, B♭, C♭, D♭, E♭, F♭, and G♭. It is known for its dark and somber sound, often used in classical and romantic music to convey deep emotions. The key signature of A-Flat Minor has six flats, making it one of the more complex keys to play. Composers like Frédéric Chopin and Johannes Brahms have utilized A-Flat Minor in their works, showcasing its expressive qualities. The key is often associated with pieces that evoke feelings of melancholy or introspection, making it a favorite among musicians exploring emotional depth in their compositions.