D♭ Minor is a musical key that consists of the notes D♭, E♭, F♭, G♭, A♭, B♭, and C♭. It is known for its dark and somber sound, often used in compositions that convey deep emotions. The key signature of D♭ Minor has six flats, making it one of the more complex keys to play on instruments like the piano. Many famous pieces have been composed in D♭ Minor, including Frédéric Chopin's Nocturne in D♭ Minor and Johannes Brahms's Symphony No. 1. This key is often associated with themes of struggle and introspection, making it a popular choice for composers looking to evoke a powerful emotional response.