A♭ Major is a musical key that consists of four flats in its key signature: B♭, E♭, A♭, and D♭. It is often associated with a warm and rich sound, making it popular in various musical genres, including classical, jazz, and pop. The A♭ Major scale includes the notes A♭, B♭, C, D♭, E♭, F, and G. In terms of chords, the primary triads in A♭ Major are A♭ major, D♭ major, and E♭ major. This key is frequently used by composers such as Ludwig van Beethoven and Frédéric Chopin, who appreciated its expressive qualities. A♭ Major can evoke a sense of nostalgia and beauty in music.