A♭ Minor is a musical key that consists of the notes A♭, B♭, C♭, D♭, E♭, F♭, and G♭. It is known for its somber and melancholic 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. This means that both keys share the same key signature but have different tonal centers. Composers like Frédéric Chopin and Johannes Brahms have utilized A♭ Minor in their works, showcasing its expressive qualities.