A♭maj, or A-flat major, is a musical key that consists of the notes A♭, C, and E♭. It is characterized by its bright and uplifting sound, often used in various genres of music, including classical, jazz, and pop. The key signature of A♭ major contains four flats, which are B♭, E♭, A♭, and D♭. In terms of scale, A♭ major follows the pattern of whole and half steps: whole, whole, half, whole, whole, whole, half. This scale is commonly used in compositions and can evoke a range of emotions, making it a popular choice for composers like Ludwig van Beethoven and Frédéric Chopin.