A♭ minor is a musical key that consists of the notes A♭, B♭, C♭, D♭, E♭, F♭, and G♭. It is known for its dark and somber sound, often used in classical and contemporary music to evoke deep emotions. The key signature of A♭ minor has seven flats, making it one of the more complex keys to play. In terms of scale, A♭ minor is the relative minor of C♭ major, sharing the same key signature. This key is commonly found in works by composers like Frédéric Chopin and Johannes Brahms, who utilized its unique qualities to enhance their musical expressions.